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🚫 Model Not Supported: The Copilot CLI failed because the requested model is not available for your subscription tier. This typically affects Copilot Pro and Education users.
This is a configuration issue, not a transient error — retrying will not help.
How to fix this
Specify a model that is supported by your subscription in the workflow frontmatter:
⚠️ Engine Failure: The copilot engine terminated unexpectedly.
Last agent output:
[copilot-driver] 2026-04-23T03:49:44.946Z attempt 1: process started (pid=155)
400 The requested model is not supported.
API time spent: 0s
Total session time: 1s
Total code changes: +0 -0
[copilot-driver] 2026-04-23T03:49:47.324Z attempt 1: process exit event exitCode=1
[copilot-driver] 2026-04-23T03:49:47.324Z attempt 1: process closed exitCode=1 duration=2s stdout=0B stderr=128B hasOutput=true
[copilot-driver] 2026-04-23T03:49:47.324Z attempt 1 failed: exitCode=1 isCAPIError400=false isMCPPolicyError=false isModelNotSupportedError=true isAuthError=false hasOutput=true retriesRemaining=3
[copilot-driver] 2026-04-23T03:49:47.324Z attempt 1: model not supported — not retrying (the requested model is unavailable for this subscription tier; specify a supported model in the workflow frontmatter)
[copilot-driver] 2026-04-23T03:49:47.324Z done: exitCode=1 totalDuration=2s
Action Required
Assign this issue to Copilot using the agentic-workflows sub-agent to automatically debug and fix the workflow failure.
Debug with any coding agent
Use this prompt with any coding agent (GitHub Copilot, Claude, Gemini, etc.):
Debug the agentic workflow failure using https://raw.githubusercontent.com/github/gh-aw/main/debug.md
The failed workflow run is at https://github.com/github/gh-aw/actions/runs/24815619962
Manually invoke the agent
Debug this workflow failure using your favorite Agent CLI and the agentic-workflows prompt.
Root Cause Identified (run §24821911567, 2026-04-23T07:07Z)
The Copilot CLI (v1.0.21, gpt-4.1-mini) launched and immediately exited with code 1:
400 The requested model is not supported.
The copilot-driver logged isModelNotSupportedError=true and explicitly suppressed retries:
model not supported — not retrying (the requested model is unavailable for this subscription tier; specify a supported model in the workflow frontmatter)
Zero turns executed; no tokens consumed.
Fix
Update the Auto-Triage Issues workflow frontmatter to specify a supported model for the current Copilot subscription tier, or remove the explicit model pin to let the engine select a default.
Workflow Failure
Workflow: Auto-Triage Issues
Branch: main
Run: https://github.com/github/gh-aw/actions/runs/24815619962
🚫 Model Not Supported: The Copilot CLI failed because the requested model is not available for your subscription tier. This typically affects Copilot Pro and Education users.
This is a configuration issue, not a transient error — retrying will not help.
How to fix this
Specify a model that is supported by your subscription in the workflow frontmatter:
To find the models available for your account, check your Copilot settings or refer to the supported models documentation.
copilotengine terminated unexpectedly.Last agent output:
Action Required
Assign this issue to Copilot using the
agentic-workflowssub-agent to automatically debug and fix the workflow failure.Debug with any coding agent
Use this prompt with any coding agent (GitHub Copilot, Claude, Gemini, etc.):
Manually invoke the agent
Debug this workflow failure using your favorite Agent CLI and the
agentic-workflowsprompt.agentic-workflowsprompt from.github/agents/agentic-workflows.agent.mdor https://github.com/github/gh-aw/blob/main/.github/agents/agentic-workflows.agent.mddebug the agentic workflow auto-triage-issues failure in https://github.com/github/gh-aw/actions/runs/24815619962Tip
Stop reporting this workflow as a failure
To stop a workflow from creating failure issues, set
report-failure-as-issue: falsein its frontmatter:Root Cause Identified (run §24821911567, 2026-04-23T07:07Z)
The Copilot CLI (v1.0.21, gpt-4.1-mini) launched and immediately exited with code 1:
The copilot-driver logged
isModelNotSupportedError=trueand explicitly suppressed retries:Zero turns executed; no tokens consumed.
Fix
Update the Auto-Triage Issues workflow frontmatter to specify a supported model for the current Copilot subscription tier, or remove the explicit model pin to let the engine select a default.