Custom OpenCode config file with support to Antigravity and OpenAI's models

opencode.json

{
    "$schema": "https://opencode.ai/config.json",
    "plugin": [
        "oh-my-opencode@latest",
        "@franlol/opencode-md-table-formatter@latest"
    ],
    "enabled_providers": [
        "antigravity-claude",
        "antigravity-gemini",
        "openai-codex",
        "x2n-claude"
    ],
    "provider": {
        "antigravity-claude": {
            "npm": "@ai-sdk/anthropic",
            "name": "Anthropic on Antigravity",
            "options": {
                "baseURL": "http://localhost:8317/v1",
                "apiKey": "dummy"
            },
            "models": {
                "claude-opus-4-5-thinking": {
                    "id": "gemini-claude-opus-4-5-thinking",
                    "name": "Claude Opus 4.5 (Thinking)",
                    "limit": {
                        "context": 200000,
                        "output": 64000
                    },
                    "reasoning": true,
                    "options": {
                        "thinkingConfig": {
                            "thinkingBudget": 32000,
                            "includeThoughts": true
                        }
                    },
                    "cost": {
                        "input": 5,
                        "output": 25,
                        "cache_read": 0.5
                    },
                    "modalities": {
                        "input": ["text", "image", "pdf"],
                        "output": ["text"]
                    }
                },
                "claude-sonnet-4-5-thinking": {
                    "id": "gemini-claude-sonnet-4-5-thinking",
                    "name": "Claude Sonnet 4.5 (Thinking)",
                    "limit": {
                        "context": 200000,
                        "output": 64000
                    },
                    "reasoning": true,
                    "options": {
                        "thinkingConfig": {
                            "thinkingBudget": 32000,
                            "includeThoughts": true
                        }
                    },
                    "cost": {
                        "input": 3,
                        "output": 15,
                        "cache_read": 0.3
                    },
                    "modalities": {
                        "input": ["text", "image", "pdf"],
                        "output": ["text"]
                    }
                },
                "claude-sonnet-4-5": {
                    "id": "gemini-claude-sonnet-4-5",
                    "name": "Claude Sonnet 4.5",
                    "limit": {
                        "context": 200000,
                        "output": 64000
                    },
                    "reasoning": false,
                    "cost": {
                        "input": 3,
                        "output": 15,
                        "cache_read": 0.3
                    },
                    "modalities": {
                        "input": ["text", "image", "pdf"],
                        "output": ["text"]
                    }
                }
            }
        },
        "antigravity-gemini": {
            "npm": "@ai-sdk/google",
            "name": "Google on Antigravity",
            "options": {
                "baseURL": "http://localhost:8317/v1beta",
                "apiKey": "dummy"
            },
            "models": {
                "gemini-3-pro-preview": {
                    "id": "gemini-3-pro-preview",
                    "name": "Gemini 3 Pro (Preview)",
                    "limit": { "context": 1048576, "output": 65536 },
                    "reasoning": true,
                    "options": {
                        "thinkingConfig": {
                            "thinkingLevel": "high",
                            "includeThoughts": true
                        }
                    },
                    "cost": {
                        "input": 2,
                        "output": 12,
                        "cache_read": 0.2
                    },
                    "modalities": {
                        "input": ["text", "image", "video", "audio", "pdf"],
                        "output": ["text"]
                    }
                },
                "gemini-3-flash-preview": {
                    "id": "gemini-3-flash-preview",
                    "name": "Gemini 3 Flash (Preview)",
                    "limit": { "context": 1048576, "output": 65536 },
                    "reasoning": true,
                    "options": {
                        "thinkingConfig": {
                            "thinkingLevel": "high",
                            "includeThoughts": true
                        }
                    },
                    "cost": {
                        "input": 0.5,
                        "output": 3,
                        "cache_read": 0.05
                    },
                    "modalities": {
                        "input": ["text", "image", "video", "audio", "pdf"],
                        "output": ["text"]
                    }
                },
                "gemini-3-pro-image-preview": {
                    "id": "gemini-3-pro-image-preview",
                    "name": "Gemini 3 Pro Image (Preview)",
                    "limit": {
                        "context": 65536,
                        "output": 32768
                    },
                    "modalities": {
                        "input": ["image", "text", "pdf"],
                        "output": ["text"]
                    }
                },
                "gemini-2.5-computer-use-preview-10-2025": {
                    "id": "gemini-2.5-computer-use-preview-10-2025",
                    "name": "Gemini 2.5 Computer Use",
                    "limit": {
                        "context": 1048576,
                        "output": 65536
                    },
                    "modalities": {
                        "input": ["image", "text"],
                        "output": ["text"]
                    }
                }
            }
        },
        "openai-codex": {
            "npm": "@ai-sdk/openai-compatible",
            "name": "OpenAI",
            "options": {
                "baseURL": "http://localhost:8317/v1",
                "apiKey": "dummy"
            },
            "models": {
                "gpt-5.2": {
                    "id": "gpt-5.2",
                    "name": "GPT-5.2 (Extra High)",
                    "limit": { "context": 272000, "output": 128000 },
                    "options": {
                        "reasoningEffort": "xhigh",
                        "textVerbosity": "high",
                        "reasoningSummary": "detailed",
                        "include": ["reasoning.encrypted_content"],
                        "store": false
                    },
                    "cost": {
                        "input": 1.75,
                        "output": 14,
                        "cache_read": 0.175
                    },
                    "modalities": {
                        "input": ["text", "image"],
                        "output": ["text"]
                    }
                },
                "gpt-5.2-codex": {
                    "id": "gpt-5.2-codex",
                    "name": "GPT-5.2-Codex (Extra High)",
                    "limit": { "context": 272000, "output": 128000 },
                    "options": {
                        "reasoningEffort": "xhigh",
                        "textVerbosity": "medium",
                        "reasoningSummary": "detailed",
                        "include": ["reasoning.encrypted_content"],
                        "store": false
                    },
                    "cost": {
                        "input": 1.25,
                        "output": 10,
                        "cache_read": 0.125
                    },
                    "modalities": {
                        "input": ["text", "image"],
                        "output": ["text"]
                    }
                }
            }
        },
        "x2n-claude": {
            "npm": "@ai-sdk/anthropic",
            "name": "X2N",
            "options": {
                "baseURL": "http://localhost:8787/v1",
                "apiKey": "dummy"
            },
            "models": {
                "claude-opus-4-5-thinking": {
                    "id": "gemini-claude-opus-4-5-thinking",
                    "name": "Claude Opus 4.5 (Thinking)",
                    "limit": {
                        "context": 200000,
                        "output": 64000
                    },
                    "reasoning": true,
                    "options": {
                        "thinkingConfig": {
                            "thinkingBudget": 32000,
                            "includeThoughts": true
                        }
                    },
                    "cost": {
                        "input": 5,
                        "output": 25,
                        "cache_read": 0.5
                    },
                    "modalities": {
                        "input": ["text", "image", "pdf"],
                        "output": ["text"]
                    }
                },
                "claude-opus-4-5": {
                    "id": "gemini-claude-opus-4-5",
                    "name": "Claude Opus 4.5",
                    "limit": {
                        "context": 200000,
                        "output": 64000
                    },
                    "reasoning": false,
                    "cost": {
                        "input": 5,
                        "output": 25,
                        "cache_read": 0.5
                    },
                    "modalities": {
                        "input": ["text", "image", "pdf"],
                        "output": ["text"]
                    }
                }
            }
        }
    }
}