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fix: use sonnet-level model as copilot default, not opus #48605

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pelikhan merged 2 commits into from
Jul 28, 2026
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fix: use sonnet-level model as copilot default, not opus #48605

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658594a
fix: change copilot default model examples from opus to sonnet (claud…
Copilot Jul 28, 2026
03b0a49
Merge branch 'main' into copilot/change-default-model-to-sonnet
pelikhan Jul 28, 2026
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2 changes: 1 addition & 1 deletion docs/src/content/docs/reference/safe-outputs.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1408,7 +1408,7 @@ Programmatically assigns GitHub Copilot coding agent to **existing** issues or p
safe-outputs:
assign-to-agent:
name: "copilot" # default agent (default: "copilot")
model: "claude-opus-4.6" # default AI model (default: "auto")
model: "claude-sonnet-5" # default AI model (default: "auto")
custom-agent: "agent-id" # default custom agent ID (optional)
custom-instructions: "..." # default custom instructions (optional)
allowed: [copilot] # restrict to specific agents (optional)
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6 changes: 3 additions & 3 deletions pkg/cli/workflows/test-assign-to-agent-with-model.md
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Expand Up @@ -14,7 +14,7 @@ on:
description: 'AI model to use'
required: false
type: string
default: 'claude-opus-4.6'
default: 'claude-sonnet-5'

permissions:
actions: read
Expand All @@ -41,7 +41,7 @@ safe-outputs:
assign-to-agent:
max: 5
name: copilot
model: claude-opus-4.6 # Default model to use when not specified per-item
model: claude-sonnet-5 # Default model to use when not specified per-item
target: "triggering" # Auto-resolves from workflow context (default)
allowed: [copilot] # Only allow copilot agent
strict: false
Expand All @@ -58,7 +58,7 @@ Assign the Copilot agent to the issue with the specified AI model. The workflow
1. **Default model configuration**: Set via `safe-outputs.assign-to-agent.model` in frontmatter (applies to all assignments in the workflow)

**For issues event:**
Assign the Copilot agent using the default model (Claude Opus 4.6) to the triggering issue.
Assign the Copilot agent using the default model (Claude Sonnet 5) to the triggering issue.

**For workflow_dispatch:**
Assign the Copilot agent to issue #${{ github.event.inputs.issue_number }} using the default model configured in the frontmatter.
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2 changes: 1 addition & 1 deletion pkg/workflow/assign_to_agent.go
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Expand Up @@ -11,7 +11,7 @@ type AssignToAgentConfig struct {
BaseSafeOutputConfig `yaml:",inline"`
SafeOutputTargetConfig `yaml:",inline"`
DefaultAgent string `yaml:"name,omitempty"` // Default agent to assign (e.g., "copilot")
DefaultModel string `yaml:"model,omitempty"` // Default AI model to use (e.g., "claude-opus-4.6")
DefaultModel string `yaml:"model,omitempty"` // Default AI model to use (e.g., "claude-sonnet-5")
DefaultCustomAgent string `yaml:"custom-agent,omitempty"` // Default custom agent ID for custom agents
DefaultCustomInstructions string `yaml:"custom-instructions,omitempty"` // Default custom instructions for the agent
Allowed []string `yaml:"allowed,omitempty"` // Optional list of allowed agent names. If omitted, any agents are allowed.
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