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feat: add ByteDance ModelArk provider with 8 models (#1435)
Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: Luca Steeb <contact@luca-steeb.com>
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‎.github/workflows/e2e.yml‎

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@@ -78,6 +78,7 @@ jobs:
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LLM_AZURE_RESOURCE: ${{ secrets.AZURE_RESOURCE }}
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LLM_CANOPY_WAVE_API_KEY: ${{ secrets.CANOPY_WAVE_API_KEY }}
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LLM_CEREBRAS_API_KEY: ${{ secrets.CEREBRAS_API_KEY }}
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LLM_BYTEDANCE_API_KEY: ${{ secrets.LLM_BYTEDANCE_API_KEY }}
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- name: Upload shard results
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if: always()

‎packages/models/src/get-provider-endpoint.ts‎

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@@ -110,6 +110,9 @@ export function getProviderEndpoint(
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case "nanogpt":
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url = "https://nano-gpt.com/api";
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break;
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case "bytedance":
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url = "https://ark.ap-southeast.bytepluses.com/api/v3";
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break;
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case "aws-bedrock":
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url =
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getProviderEnvValue(
@@ -293,6 +296,8 @@ export function getProviderEndpoint(
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return `${url}/api/v1/services/aigc/multimodal-generation/generation`;
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}
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return `${url}/v1/chat/completions`;
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case "bytedance":
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return `${url}/chat/completions`;
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case "inference.net":
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case "llmgateway":
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case "cloudrift":

‎packages/models/src/models.ts‎

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@@ -1,5 +1,6 @@
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import { alibabaModels } from "./models/alibaba.js";
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import { anthropicModels } from "./models/anthropic.js";
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import { bytedanceModels } from "./models/bytedance.js";
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import { deepseekModels } from "./models/deepseek.js";
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import { googleModels } from "./models/google.js";
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import { llmgatewayModels } from "./models/llmgateway.js";
@@ -253,6 +254,7 @@ export const models = [
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...minimaxModels,
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...moonshotModels,
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...alibabaModels,
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...bytedanceModels,
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...nousresearchModels,
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...routewayModels,
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...zaiModels,

‎packages/models/src/models/bytedance.ts‎

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@@ -0,0 +1,108 @@
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import type { ModelDefinition } from "@/models.js";
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export const bytedanceModels = [
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{
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id: "seed-1-6-250615",
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name: "Seed 1.6 (250615)",
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description:
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"ByteDance Seed 1.6 vision model with thinking/non-thinking modes, multimodal inputs, and 256K context window",
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family: "bytedance",
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releasedAt: new Date("2025-06-15"),
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publishedAt: new Date("2026-01-12"),
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providers: [
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{
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providerId: "bytedance",
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modelName: "seed-1-6-250615",
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inputPrice: 0.00025 / 1000,
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outputPrice: 0.002 / 1000,
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cachedInputPrice: 0.00005 / 1000,
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requestPrice: 0,
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contextSize: 256000,
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maxOutput: undefined,
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streaming: true,
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reasoning: true,
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vision: true,
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tools: true,
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jsonOutput: true,
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},
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],
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},
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{
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id: "seed-1-6-250915",
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name: "Seed 1.6 (250915)",
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description:
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"ByteDance Seed 1.6 vision model released September 15, 2025 with thinking/non-thinking modes and multimodal inputs",
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family: "bytedance",
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releasedAt: new Date("2025-09-15"),
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publishedAt: new Date("2026-01-13"),
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providers: [
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{
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providerId: "bytedance",
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modelName: "seed-1-6-250915",
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inputPrice: 0.00025 / 1000,
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cachedInputPrice: 0.00005 / 1000,
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outputPrice: 0.002 / 1000,
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requestPrice: 0,
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contextSize: 256000,
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maxOutput: undefined,
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streaming: true,
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reasoning: true,
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vision: true,
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tools: true,
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jsonOutput: true,
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},
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],
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},
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{
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id: "seed-1-6-flash-250715",
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name: "Seed 1.6 Flash (250715)",
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description:
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"ByteDance Seed 1.6 Flash - faster, cost-effective vision model released July 15, 2025",
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family: "bytedance",
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releasedAt: new Date("2025-07-15"),
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publishedAt: new Date("2026-01-13"),
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providers: [
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{
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providerId: "bytedance",
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modelName: "seed-1-6-flash-250715",
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inputPrice: 0.00007 / 1000,
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cachedInputPrice: 0.000015 / 1000,
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outputPrice: 0.0003 / 1000,
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requestPrice: 0,
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contextSize: 256000,
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maxOutput: undefined,
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streaming: true,
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reasoning: true,
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vision: true,
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tools: true,
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jsonOutput: true,
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},
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],
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},
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{
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id: "seed-1-8-251228",
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name: "Seed 1.8 (251228)",
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description:
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"ByteDance Seed 1.8 advanced vision model released December 28, 2025 with enhanced capabilities",
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family: "bytedance",
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releasedAt: new Date("2025-12-28"),
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publishedAt: new Date("2026-01-13"),
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providers: [
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{
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providerId: "bytedance",
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modelName: "seed-1-8-251228",
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inputPrice: 0.00025 / 1000,
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cachedInputPrice: 0.00005 / 1000,
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outputPrice: 0.002 / 1000,
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requestPrice: 0,
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contextSize: 256000,
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maxOutput: undefined,
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streaming: true,
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reasoning: true,
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vision: true,
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tools: true,
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jsonOutput: true,
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},
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],
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},
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] as const satisfies ModelDefinition[];

‎packages/models/src/models/deepseek.ts‎

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@@ -128,6 +128,22 @@ export const deepseekModels = [
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jsonOutputSchema: false,
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jsonOutput: true,
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},
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{
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providerId: "bytedance",
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modelName: "deepseek-v3-1-250821",
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inputPrice: 0.56 / 1e6,
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cachedInputPrice: 0.112 / 1e6,
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outputPrice: 1.68 / 1e6,
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requestPrice: 0,
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contextSize: 128000,
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maxOutput: 32768,
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reasoning: true,
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reasoningOutput: "omit" as const,
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streaming: true,
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vision: false,
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tools: true,
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jsonOutput: false,
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},
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],
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},
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{
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jsonOutputSchema: false,
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jsonOutput: true,
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},
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{
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providerId: "bytedance",
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modelName: "deepseek-v3-2-251201",
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inputPrice: 0.28 / 1e6,
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cachedInputPrice: 0.056 / 1e6,
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outputPrice: 0.42 / 1e6,
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requestPrice: 0,
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contextSize: 131072,
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reasoning: true,
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reasoningOutput: "omit" as const,
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maxOutput: 131072,
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streaming: true,
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vision: false,
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tools: true,
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jsonOutput: false,
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},
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],
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},
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] as const satisfies ModelDefinition[];

‎packages/models/src/models/moonshot.ts‎

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@@ -91,6 +91,20 @@ export const moonshotModels = [
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tools: true,
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jsonOutput: true,
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},
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{
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providerId: "bytedance",
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modelName: "kimi-k2-250905",
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inputPrice: 0.6 / 1e6,
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cachedInputPrice: 0.12 / 1e6,
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outputPrice: 2.5 / 1e6,
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requestPrice: 0,
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contextSize: 256000,
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maxOutput: 32768,
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streaming: true,
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vision: false,
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tools: true,
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jsonOutput: false,
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},
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],
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},
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{
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tools: true,
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jsonOutput: true,
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},
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{
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providerId: "bytedance",
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modelName: "kimi-k2-thinking-251104",
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inputPrice: 0.6 / 1e6,
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cachedInputPrice: 0.12 / 1e6,
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outputPrice: 2.5 / 1e6,
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requestPrice: 0,
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contextSize: 256000,
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maxOutput: 32768,
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reasoning: true,
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streaming: true,
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vision: false,
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tools: true,
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jsonOutput: false,
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},
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],
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},
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{

‎packages/models/src/providers.ts‎

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@@ -441,6 +441,22 @@ export const providers = [
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website: "https://nano-gpt.com",
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announcement: null,
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},
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{
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id: "bytedance",
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name: "ByteDance",
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description:
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"ByteDance's ModelArk platform with OpenAI-compatible API for large language models",
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env: {
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required: {
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apiKey: "LLM_BYTEDANCE_API_KEY",
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},
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},
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streaming: true,
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cancellation: true,
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color: "#FF4757",
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website: "https://www.byteplus.com/en/product/modelark",
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announcement: null,
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},
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] as const satisfies ProviderDefinition[];
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export type ProviderId = (typeof providers)[number]["id"];

‎packages/shared/src/components/provider-icons.tsx‎

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@@ -103,6 +103,39 @@ export const DeepseekIcon: React.FC<React.SVGProps<SVGSVGElement>> = (
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</svg>
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);
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// ByteDance Icon
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export const BytedanceIcon: React.FC<React.SVGProps<SVGSVGElement>> = (
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props,
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) => (
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<svg
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height="1em"
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viewBox="0 0 24 24"
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width="1em"
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xmlns="http://www.w3.org/2000/svg"
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{...props}
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>
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<path
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d="M14.944 18.587l-1.704-.445V10.01l1.824-.462c1-.254 1.84-.461 1.88-.453.032 0 .056 2.235.056 4.972v4.973l-.176-.008c-.104 0-.952-.207-1.88-.446z"
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fill="#00C8D2"
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fillRule="nonzero"
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/>
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<path
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d="M7 16.542c0-2.736.024-4.98.064-4.98.032-.008.872.2 1.88.454l1.816.461-.016 4.05-.024 4.049-1.632.422c-.896.23-1.736.445-1.856.469L7 21.523v-4.98z"
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fill="#3C8CFF"
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fillRule="nonzero"
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/>
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<path
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d="M19.24 12.477c0-9.03.008-9.515.144-9.475.072.024.784.207 1.576.406.792.207 1.576.405 1.744.445l.296.08-.016 8.56-.024 8.568-1.624.414c-.888.23-1.728.437-1.856.47l-.24.055v-9.523z"
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fill="#78E6DC"
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fillRule="nonzero"
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/>
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<path
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d="M1 12.509c0-4.678.024-8.505.064-8.505.032 0 .872.207 1.872.454l1.824.461v7.582c0 4.16-.016 7.574-.032 7.574-.024 0-.872.215-1.88.47L1 21.013v-8.505z"
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fill="#325AB4"
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/>
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</svg>
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);
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// Google Studio AI Icon
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export const GoogleStudioAIIcon: React.FC<React.SVGProps<SVGSVGElement>> = (
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props,
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// Export all icons as a map for easy access
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export const ProviderIcons = {
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anthropic: AnthropicIcon,
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bytedance: BytedanceIcon,
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cloudrift: CloudriftIcon,
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deepseek: DeepseekIcon,
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"google-ai-studio": GoogleStudioAIIcon,
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> = {
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openai: ProviderIcons.openai,
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anthropic: ProviderIcons.anthropic,
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bytedance: ProviderIcons.bytedance,
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"google-ai-studio": ProviderIcons["google-ai-studio"],
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"google-vertex": ProviderIcons["google-vertex"],
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"inference.net": ProviderIcons["inference.net"],

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