Add GPT-5.6 (Sol/Terra/Luna) to the GitHub Copilot provider catalog

[rob-balfre]

What do you want to change?

Add the three GPT-5.6 models to packages/ai/src/providers/github-copilot.models.ts (via generate-models.ts) for the github-copilot provider: gpt-5.6-sol, gpt-5.6-terra, gpt-5.6-luna.

Why?

GitHub Copilot rolled these out today: https://github.blog/changelog/2026-07-09-openais-gpt-5-6-sol-terra-and-luna-are-now-available-in-github-copilot/ — they're already selectable in Copilot CLI/VS Code on my Pro+ subscription, but missing from Pi's model picker since the Copilot provider only shows models present in both the live /models response and the static catalog. Same gap as previous GPT-5.x Copilot additions (e.g. #3719, #1393).

How? (optional)

Clone the existing gpt-5.5 Copilot entry in generate-models.ts (same api: "openai-responses", Copilot headers/baseUrl, reasoning: true, thinkingLevelMap), one block per variant, then regenerate. I can open a PR once approved — I haven't verified the exact slugs against my account's live /models yet, happy to paste that output if useful.

[github-actions]

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[davidbrai]

@badlogic the models are not yet on models.dev
I'm guessing they should appear there soon?
thinking it may be better to wait for that than adding code we'll soon remove? wdyt?

[sylvia-schmitt]

@badlogic
They are available now on models.dev.
2026-07-10 1:55 pm CET

[petrroll]

@sylvia-schmitt that's for openai provider, not copilot provider.

vs

[petrroll]

anomalyco/models.dev#3177

Raised PR to fix it.

[petrroll]

Merged, I suppose next rebuild should bring those in :).

[petrroll]

@davidbrai should be a simple rebuild now & new version that modes.dev is fixed

[jstanley-nwn]

For those waiting on the update and want to use the new models, you can ask pi to manually add them to ~/.pi/agent/models.json

Mine looks like this:

{
  "providers": {
    "github-copilot": {
      "models": [
        {
          "id": "gpt-5.6-luna",
          "name": "GPT-5.6 Luna",
          "api": "openai-responses",
          "headers": {
            "User-Agent": "GitHubCopilotChat/0.35.0",
            "Editor-Version": "vscode/1.107.0",
            "Editor-Plugin-Version": "copilot-chat/0.35.0",
            "Copilot-Integration-Id": "vscode-chat"
          },
          "reasoning": true,
          "thinkingLevelMap": {
            "off": null,
            "minimal": "low",
            "xhigh": "xhigh"
          },
          "input": ["text", "image"],
          "cost": {
            "input": 1,
            "output": 6,
            "cacheRead": 0.1,
            "cacheWrite": 1.25,
            "tiers": [
              {
                "inputTokensAbove": 272000,
                "input": 2,
                "output": 9,
                "cacheRead": 0.2,
                "cacheWrite": 2.5
              }
            ]
          },
          "contextWindow": 272000,
          "maxTokens": 128000
        },
        {
          "id": "gpt-5.6-sol",
          "name": "GPT-5.6 Sol",
          "api": "openai-responses",
          "headers": {
            "User-Agent": "GitHubCopilotChat/0.35.0",
            "Editor-Version": "vscode/1.107.0",
            "Editor-Plugin-Version": "copilot-chat/0.35.0",
            "Copilot-Integration-Id": "vscode-chat"
          },
          "reasoning": true,
          "thinkingLevelMap": {
            "off": null,
            "minimal": "low",
            "xhigh": "xhigh"
          },
          "input": ["text", "image"],
          "cost": {
            "input": 5,
            "output": 30,
            "cacheRead": 0.5,
            "cacheWrite": 6.25,
            "tiers": [
              {
                "inputTokensAbove": 272000,
                "input": 10,
                "output": 45,
                "cacheRead": 1,
                "cacheWrite": 12.5
              }
            ]
          },
          "contextWindow": 272000,
          "maxTokens": 128000
        },
        {
          "id": "gpt-5.6-terra",
          "name": "GPT-5.6 Terra",
          "api": "openai-responses",
          "headers": {
            "User-Agent": "GitHubCopilotChat/0.35.0",
            "Editor-Version": "vscode/1.107.0",
            "Editor-Plugin-Version": "copilot-chat/0.35.0",
            "Copilot-Integration-Id": "vscode-chat"
          },
          "reasoning": true,
          "thinkingLevelMap": {
            "off": null,
            "minimal": "low",
            "xhigh": "xhigh"
          },
          "input": ["text", "image"],
          "cost": {
            "input": 2.5,
            "output": 15,
            "cacheRead": 0.25,
            "cacheWrite": 3.125,
            "tiers": [
              {
                "inputTokensAbove": 272000,
                "input": 5,
                "output": 22.5,
                "cacheRead": 0.5,
                "cacheWrite": 6.25
              }
            ]
          },
          "contextWindow": 272000,
          "maxTokens": 128000
        }
      ]
    }
  }
}