{ "openapi": "3.1.1", "info": { "title": "AI Model Compatibility Explorer API", "version": "1.0.0", "summary": "Which LLMs take images, audio or files, fit your context and support tools or structured outputs?", "description": "Every endpoint performs the same calculation as the human page and returns inputs, result, units, assumptions, sources, warnings and computedAt. MCP endpoint: /mcp." }, "servers": [ { "url": "https://aimodelcompatibilityexplorer.usefulweb.site" } ], "paths": { "/api/v1/calculate": { "post": { "operationId": "calculate", "summary": "Which LLMs take images, audio or files, fit your context and support tools or structured outputs?", "description": "Filters and compares hundreds of language models by input modalities (image, audio, file, video), output modality, context window, maximum output tokens and API features such as tools, tool_choice, structured_outputs, response_format and reasoning, using OpenRouter's public models API (or a pasted copy of it). Shows matching models with prices, near misses with what they lack, and recommendations.\n\nMethodology:\n- Live mode reads GET https://openrouter.ai/api/v1/models (public, no key). Fields used: architecture.input_modalities/output_modalities, context_length, top_provider.max_completion_tokens, supported_parameters and pricing (USD per token, shown per 1M tokens).\n- A model matches when it has every required input modality, the required output modality, at least the minimum context and output tokens, and every required API parameter listed in supported_parameters.\n- Near misses are models (matching the name filter) that lack exactly one requirement.\n- Recommendations: cheapest by input price, largest context and broadest feature set among the matches. Prices are for the routed provider listed by OpenRouter, not necessarily the vendor's own API.", "tags": [ "ai-infra" ], "x-mcp-tool": "ai_model_compatibility_explorer", "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/AiModelCompatibilityExplorerInput" }, "examples": { "example1": { "summary": "Vision + tools + structured outputs, ≥128k context (OpenRouter snapshot 2026-10-14)", "value": { "source": "paste", "modelsJson": "{\"data\":[{\"id\":\"openai/gpt-4o-mini\",\"name\":\"OpenAI: GPT-4o-mini\",\"context_length\":128000,\"architecture\":{\"input_modalities\":[\"text\",\"image\",\"file\"],\"output_modalities\":[\"text\"]},\"pricing\":{\"prompt\":\"0.00000015\",\"completion\":\"0.0000006\",\"input_cache_read\":\"0.000000075\"},\"top_provider\":{\"context_length\":128000,\"max_completion_tokens\":16384},\"supported_parameters\":[\"frequency_penalty\",\"logit_bias\",\"logprobs\",\"max_completion_tokens\",\"max_tokens\",\"prediction\",\"presence_penalty\",\"response_format\",\"seed\",\"stop\",\"structured_outputs\",\"temperature\",\"tool_choice\",\"tools\",\"top_logprobs\",\"top_p\",\"web_search_options\"]},{\"id\":\"google/gemini-2.5-flash\",\"name\":\"Google: Gemini 2.5 Flash\",\"context_length\":1048576,\"architecture\":{\"input_modalities\":[\"file\",\"image\",\"text\",\"audio\",\"video\"],\"output_modalities\":[\"text\"]},\"pricing\":{\"prompt\":\"0.0000003\",\"completion\":\"0.0000025\",\"input_cache_read\":\"0.00000003\",\"input_cache_write\":\"0.0000000833333333333333\"},\"top_provider\":{\"context_length\":1048576,\"max_completion_tokens\":65535},\"supported_parameters\":[\"include_reasoning\",\"max_tokens\",\"reasoning\",\"response_format\",\"seed\",\"stop\",\"structured_outputs\",\"temperature\",\"tool_choice\",\"tools\",\"top_p\"]},{\"id\":\"anthropic/claude-sonnet-4\",\"name\":\"Anthropic: Claude Sonnet 4\",\"context_length\":200000,\"architecture\":{\"input_modalities\":[\"image\",\"text\",\"file\"],\"output_modalities\":[\"text\"]},\"pricing\":{\"prompt\":\"0.000003\",\"completion\":\"0.000015\",\"input_cache_read\":\"0.0000003\",\"input_cache_write\":\"0.00000375\"},\"top_provider\":{\"context_length\":200000,\"max_completion_tokens\":64000},\"supported_parameters\":[\"include_reasoning\",\"max_tokens\",\"reasoning\",\"stop\",\"temperature\",\"tool_choice\",\"tools\",\"top_k\",\"top_p\"]},{\"id\":\"meta-llama/llama-3.3-70b-instruct\",\"name\":\"Meta: Llama 3.3 70B Instruct\",\"context_length\":131072,\"architecture\":{\"input_modalities\":[\"text\"],\"output_modalities\":[\"text\"]},\"pricing\":{\"prompt\":\"0.00000059\",\"completion\":\"0.00000079\",\"input_cache_read\":\"0.000000295\"},\"top_provider\":{\"context_length\":131072,\"max_completion_tokens\":32768},\"supported_parameters\":[\"frequency_penalty\",\"logit_bias\",\"logprobs\",\"max_tokens\",\"min_p\",\"presence_penalty\",\"repetition_penalty\",\"response_format\",\"seed\",\"stop\",\"structured_outputs\",\"temperature\",\"tool_choice\",\"tools\",\"top_k\",\"top_logprobs\",\"top_p\"]},{\"id\":\"deepseek/deepseek-chat-v3.1\",\"name\":\"DeepSeek: DeepSeek V3.1\",\"context_length\":163840,\"architecture\":{\"input_modalities\":[\"text\"],\"output_modalities\":[\"text\"]},\"pricing\":{\"prompt\":\"0.00000025\",\"completion\":\"0.00000095\",\"input_cache_read\":\"0.00000013\"},\"top_provider\":{\"context_length\":163840,\"max_completion_tokens\":32768},\"supported_parameters\":[\"frequency_penalty\",\"include_reasoning\",\"logit_bias\",\"logprobs\",\"max_tokens\",\"min_p\",\"presence_penalty\",\"reasoning\",\"repetition_penalty\",\"response_format\",\"seed\",\"stop\",\"structured_outputs\",\"temperature\",\"tool_choice\",\"tools\",\"top_k\",\"top_logprobs\",\"top_p\"]},{\"id\":\"mistralai/mistral-small-3.2-24b-instruct\",\"name\":\"Mistral: Mistral Small 3.2 24B\",\"context_length\":256000,\"architecture\":{\"input_modalities\":[\"image\",\"text\"],\"output_modalities\":[\"text\"]},\"pricing\":{\"prompt\":\"0.00000009375\",\"completion\":\"0.00000025\"},\"top_provider\":{\"context_length\":256000,\"max_completion_tokens\":16384},\"supported_parameters\":[\"frequency_penalty\",\"logit_bias\",\"logprobs\",\"max_tokens\",\"min_p\",\"presence_penalty\",\"repetition_penalty\",\"response_format\",\"seed\",\"stop\",\"structured_outputs\",\"temperature\",\"tool_choice\",\"tools\",\"top_k\",\"top_logprobs\",\"top_p\"]}]}", "inputModalities": [ "image" ], "minContext": 128000, "parameters": [ "tools", "structured_outputs" ] } } } } } }, "responses": { "200": { "description": "Calculation result envelope.", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/AiModelCompatibilityExplorerResult" } } } }, "400": { "description": "Malformed JSON body.", "content": { "application/problem+json": { "schema": { "$ref": "#/components/schemas/Problem" } } } }, "422": { "description": "Invalid input (see errors[]).", "content": { "application/problem+json": { "schema": { "$ref": "#/components/schemas/Problem" } } } }, "429": { "description": "Rate limit exceeded (see Retry-After).", "content": { "application/problem+json": { "schema": { "$ref": "#/components/schemas/Problem" } } } } } } }, "/api/v1/tool": { "get": { "operationId": "getToolDefinition", "summary": "Inputs, output schema and examples for this tool", "responses": { "200": { "description": "Tool definition.", "content": { "application/json": { "schema": { "type": "object" } } } } } } } }, "components": { "schemas": { "Problem": { "type": "object", "description": "RFC 9457 problem details. 422 responses include per-field `errors`.", "required": [ "type", "title", "status", "detail" ], "properties": { "type": { "type": "string" }, "title": { "type": "string" }, "status": { "type": "integer" }, "detail": { "type": "string" }, "code": { "type": "string" }, "errors": { "type": "array", "items": { "type": "object", "required": [ "field", "message" ], "properties": { "field": { "type": "string" }, "message": { "type": "string" } } } } } }, "AiModelCompatibilityExplorerInput": { "type": "object", "additionalProperties": false, "properties": { "source": { "title": "Model data", "type": "string", "enum": [ "live", "paste" ], "default": "live" }, "modelsJson": { "title": "Models JSON", "description": "Response of GET https://openrouter.ai/api/v1/models (or a subset).", "type": "string", "maxLength": 3000000 }, "search": { "title": "Name / provider contains", "type": "string", "maxLength": 100 }, "inputModalities": { "title": "Required input types (besides text)", "type": "array", "items": { "type": "string", "enum": [ "image", "audio", "file", "video" ] }, "default": [] }, "outputModality": { "title": "Required output", "type": "string", "enum": [ "any", "text", "image", "audio" ], "default": "text" }, "minContext": { "title": "Minimum context window", "type": "integer", "minimum": 0, "maximum": 100000000, "x-unit": "tokens" }, "minOutputTokens": { "title": "Minimum max output", "type": "integer", "minimum": 0, "maximum": 10000000, "x-unit": "tokens" }, "parameters": { "title": "Required API features", "type": "array", "items": { "type": "string", "enum": [ "tools", "tool_choice", "parallel_tool_calls", "structured_outputs", "response_format", "reasoning", "include_reasoning", "seed", "logprobs", "stop", "temperature", "web_search_options" ] }, "default": [] }, "sort": { "title": "Sort by", "type": "string", "enum": [ "price", "context", "name" ], "default": "price" }, "maxResults": { "title": "Maximum models shown", "type": "integer", "minimum": 1, "maximum": 200, "default": 30 } }, "required": [] }, "AiModelCompatibilityExplorerResult": { "type": "object", "additionalProperties": false, "required": [ "schemaVersion", "tool", "computedAt", "inputs", "summary", "result", "units", "assumptions", "sources", "warnings", "presentation", "links" ], "properties": { "schemaVersion": { "type": "string", "const": "1.0" }, "tool": { "type": "object", "additionalProperties": false, "required": [ "id", "name", "version" ], "properties": { "id": { "type": "string" }, "name": { "type": "string" }, "version": { "type": "string" } } }, "computedAt": { "type": "string", "format": "date-time" }, "inputs": { "type": "object", "description": "Normalised inputs actually used, including applied defaults." }, "summary": { "type": "string" }, "result": { "type": "object", "additionalProperties": false, "required": [ "dataSource", "totalModels", "matching", "models", "nearMisses", "recommendations" ], "properties": { "dataSource": { "type": "string" }, "totalModels": { "type": "integer" }, "matching": { "type": "integer" }, "models": { "type": "array", "items": { "type": "object", "additionalProperties": false, "required": [ "id", "name", "contextLength", "maxOutputTokens", "inputModalities", "outputModalities", "features", "inputPerM", "outputPerM", "cacheReadPerM" ], "properties": { "id": { "type": "string" }, "name": { "type": "string" }, "contextLength": { "type": [ "integer", "null" ] }, "maxOutputTokens": { "type": [ "integer", "null" ] }, "inputModalities": { "type": "array", "items": { "type": "string" } }, "outputModalities": { "type": "array", "items": { "type": "string" } }, "features": { "type": "array", "items": { "type": "string" }, "description": "Supported API parameters from the tracked list." }, "inputPerM": { "type": [ "number", "null" ] }, "outputPerM": { "type": [ "number", "null" ] }, "cacheReadPerM": { "type": [ "number", "null" ] } } } }, "nearMisses": { "type": "array", "items": { "type": "object", "additionalProperties": false, "required": [ "id", "missing" ], "properties": { "id": { "type": "string" }, "missing": { "type": "array", "items": { "type": "string" } } } } }, "recommendations": { "type": "array", "items": { "type": "object", "additionalProperties": false, "required": [ "label", "id", "reason" ], "properties": { "label": { "type": "string" }, "id": { "type": "string" }, "reason": { "type": "string" } } } } } }, "units": { "type": "object", "additionalProperties": { "type": "string" } }, "assumptions": { "type": "array", "items": { "type": "string" } }, "sources": { "type": "array", "items": { "type": "object", "additionalProperties": false, "required": [ "title" ], "properties": { "title": { "type": "string" }, "url": { "type": "string" }, "publisher": { "type": "string" }, "retrievedAt": { "type": "string" }, "note": { "type": "string" } } } }, "warnings": { "type": "array", "items": { "type": "string" } }, "presentation": { "type": "array", "items": { "type": "object" }, "description": "Display blocks used by the human page (same data)." }, "links": { "type": "object", "additionalProperties": false, "required": [ "human", "api", "openapi", "methodology" ], "properties": { "human": { "type": "string", "format": "uri" }, "api": { "type": "string", "format": "uri" }, "openapi": { "type": "string", "format": "uri" }, "methodology": { "type": "string", "format": "uri" } } } } } } } }