Enable Gemini 3 series models in Copilot Chat BYOK (bring your own key)

copilotChat-gemini3.json

{
    "version": 1,
    "modelInfo": {
        "OpenAI": {
            "gpt-4.1": {
                "name": "GPT-4.1",
                "toolCalling": true,
                "vision": true,
                "maxInputTokens": 1014808,
                "maxOutputTokens": 32768
            },
            "gpt-4.1-mini": {
                "name": "GPT-4.1 mini",
                "toolCalling": true,
                "vision": true,
                "maxInputTokens": 1014808,
                "maxOutputTokens": 32768
            },
            "gpt-4.1-nano": {
                "name": "GPT-4.1 nano",
                "toolCalling": true,
                "vision": true,
                "maxInputTokens": 1014808,
                "maxOutputTokens": 32768
            },
            "gpt-4o-2024-08-06": {
                "name": "GPT-4o (2024-08-06)",
                "toolCalling": true,
                "vision": true,
                "maxInputTokens": 111616,
                "maxOutputTokens": 16384
            },
            "gpt-4o-2024-11-20": {
                "name": "GPT-4o (2024-11-20)",
                "toolCalling": true,
                "vision": true,
                "maxInputTokens": 111616,
                "maxOutputTokens": 16384
            },
            "o4-mini": {
                "name": "o4-mini",
                "toolCalling": true,
                "vision": true,
                "thinking": true,
                "maxInputTokens": 1014808,
                "maxOutputTokens": 32768
            },
            "o3": {
                "name": "o3",
                "toolCalling": true,
                "vision": true,
                "thinking": true,
                "maxInputTokens": 1014808,
                "maxOutputTokens": 32768
            },
            "gpt-5": {
                "name": "GPT-5",
                "toolCalling": true,
                "vision": true,
                "thinking": true,
                "maxInputTokens": 300000,
                "maxOutputTokens": 100000
            },
            "gpt-5-mini": {
                "name": "GPT-5 Mini",
                "toolCalling": true,
                "vision": true,
                "thinking": true,
                "maxInputTokens": 300000,
                "maxOutputTokens": 100000
            },
            "gpt-5-nano": {
                "name": "GPT-5 Nano",
                "toolCalling": true,
                "vision": true,
                "thinking": true,
                "maxInputTokens": 300000,
                "maxOutputTokens": 100000
            }
        },
        "Anthropic": {
            "claude-opus-4-20250514": {
                "name": "Claude Opus 4",
                "vision": true,
                "toolCalling": true,
                "thinking": true,
                "maxInputTokens": 111616,
                "maxOutputTokens": 16384
            },
            "claude-sonnet-4-20250514": {
                "name": "Claude Sonnet 4",
                "vision": true,
                "toolCalling": true,
                "thinking": true,
                "maxInputTokens": 111616,
                "maxOutputTokens": 16384
            },
            "claude-haiku-4-5-20251001": {
                "name": "Claude Haiku 4.5",
                "vision": true,
                "toolCalling": true,
                "thinking": true,
                "maxInputTokens": 130000,
                "maxOutputTokens": 49152
            },
            "claude-sonnet-4-5-20250929": {
                "name": "Claude Sonnet 4.5",
                "vision": true,
                "toolCalling": true,
                "thinking": true,
                "maxInputTokens": 130000,
                "maxOutputTokens": 49152
            },
            "claude-3-7-sonnet-20250219": {
                "name": "Claude 3.7 Sonnet",
                "vision": true,
                "toolCalling": true,
                "thinking": true,
                "maxInputTokens": 64000,
                "maxOutputTokens": 16384
            },
            "claude-3-5-sonnet-20241022": {
                "name": "Claude 3.5 Sonnet",
                "vision": true,
                "toolCalling": true,
                "maxInputTokens": 64000,
                "maxOutputTokens": 8192
            },
            "claude-3-5-haiku-20241022": {
                "name": "Claude 3.5 Haiku",
                "vision": true,
                "toolCalling": true,
                "maxInputTokens": 64000,
                "maxOutputTokens": 8192
            }
        },
        "Gemini": {
            "models/gemini-2.5-pro": {
                "name": "Gemini 2.5 Pro",
                "vision": true,
                "toolCalling": true,
                "maxInputTokens": 819600,
                "maxOutputTokens": 65536
            },
            "models/gemini-2.5-flash": {
                "name": "Gemini 2.5 Flash Preview",
                "vision": true,
                "toolCalling": true,
                "maxInputTokens": 819600,
                "maxOutputTokens": 65536
            },
            "models/gemini-3-pro-preview": {
                "name": "Gemini 3 Pro Preview",
                "vision": true,
                "thinking": true,
                "toolCalling": true,
                "maxInputTokens": 1048576,
                "maxOutputTokens": 65536
            },
            "models/gemini-3-flash-preview": {
                "name": "Gemini 3 Flash Preview",
                "vision": true,
                "toolCalling": true,
                "maxInputTokens": 1048576,
                "maxOutputTokens": 65536
            }
        },
        "Groq": {
            "qwen-qwq-32b": {
                "name": "Qwen QWQ 32B",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 131072,
                "maxOutputTokens": 8192
            },
            "qwen-2.5-coder-32b": {
                "name": "Qwen 2.5 Coder 32B",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 131072,
                "maxOutputTokens": 8192
            },
            "qwen-2.5-32b": {
                "name": "Qwen 2.5 32B",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 131072,
                "maxOutputTokens": 8192
            },
            "deepseek-r1-distill-qwen-32b": {
                "name": "DeepSeek R1 Distill Qwen 32B",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 131072,
                "maxOutputTokens": 16384
            },
            "deepseek-r1-distill-llama-70b": {
                "name": "DeepSeek R1 Distill Llama 70B",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 131072,
                "maxOutputTokens": 8192
            },
            "llama-3.3-70b-versatile": {
                "name": "Llama 3.3 70B Versatile",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 131072,
                "maxOutputTokens": 32768
            },
            "llama-3.1-8b-instant": {
                "name": "Llama 3.1 8B Instant",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 131072,
                "maxOutputTokens": 8192
            },
            "mixtral-8x7b-32768": {
                "name": "Mixtral 8x7B 32768",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 32768,
                "maxOutputTokens": 8192
            },
            "gemma2-9b-it": {
                "name": "Gemma2 9B IT",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 8192,
                "maxOutputTokens": 8192
            },
            "openai/gpt-oss-20b": {
                "name": "GPT OSS 20b",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 100000,
                "maxOutputTokens": 30000
            },
            "openai/gpt-oss-120b": {
                "name": "GPT OSS 120b",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 100000,
                "maxOutputTokens": 30000
            }
        },
        "xAI": {
            "grok-code-fast-1": {
                "name": "Grok Code Fast 1",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 120000,
                "maxOutputTokens": 120000
            },
            "grok-4-0709": {
                "name": "Grok 4",
                "toolCalling": true,
                "vision": true,
                "maxInputTokens": 120000,
                "maxOutputTokens": 120000
            },
            "grok-3": {
                "name": "Grok 3",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 80000,
                "maxOutputTokens": 30000
            },
            "grok-3-mini": {
                "name": "Grok 3 Mini",
                "toolCalling": true,
                "vision": false,
                "maxInputTokens": 80000,
                "maxOutputTokens": 30000
            }
        }
    }
}

Usage

For BSD sed:

sed -i '' 's|https://main.vscode-cdn.net/extensions/copilotChat.json|https://gist.githubusercontent.com/toto6038/e78b3f311b72447300ef744e6d670d83/raw/b0ac3d053fdba4fb8fa5c7d6eb1abc29acbb3848/copilotChat-gemini3.json|g' ~/.vscode/extensions/github.copilot-chat-*/dist/extension.js

If you use Copilot Chat on remote, change the target from ~/.vscode/extensions/github.copilot-chat-*/dist/extension.js to ~/.vscode-server/extensions/github.copilot-chat-*/dist/extension.js

After executing the command in previous comment, reload your VS Code window via the Developer: Reload Window option in command palette. You should now see Gemini 3 models in model picker as the screenshot below.