MCP Servers

whichmodel-mcp

A model routing advisor for autonomous agents — get cost-optimised LLM recommendations via MCP.

README

whichmodel-mcp

A model routing advisor for autonomous agents — get cost-optimised LLM recommendations via MCP.

whichmodel.dev tracks pricing and capabilities across 100+ LLM models, updated every 4 hours. This MCP server exposes that data so AI agents can pick the right model at the best price for every task.

MCP Endpoint

https://whichmodel.dev/mcp

Transport: Streamable HTTP (MCP spec 2025-03-26)

Quick Start

Add to your MCP client config:

{
  "mcpServers": {
    "whichmodel": {
      "url": "https://whichmodel.dev/mcp"
    }
  }
}

No API key required. No installation needed.

Tools

`recommend_model`

Get a cost-optimised model recommendation for a specific task type, complexity, and budget.

Parameter	Type	Description
`task_type`	enum (required)	`chat`, `code_generation`, `code_review`, `summarisation`, `translation`, `data_extraction`, `tool_calling`, `creative_writing`, `research`, `classification`, `embedding`, `vision`, `reasoning`
`complexity`	`low` \| `medium` \| `high`	Task complexity (default: `medium`)
`estimated_input_tokens`	number	Expected input size in tokens
`estimated_output_tokens`	number	Expected output size in tokens
`budget_per_call`	number	Maximum spend in USD per call
`requirements`	object	Capability requirements: `tool_calling`, `json_output`, `streaming`, `context_window_min`, `providers_include`, `providers_exclude`

Returns: recommended model, alternative, budget option, cost estimate, and reasoning.

`compare_models`

Head-to-head comparison of 2–5 models with optional volume cost projections.

Parameter	Type	Description
`models`	string[] (required)	Model IDs, e.g. `[anthropic/claude-sonnet-4, openai/gpt-4.1]`
`task_type`	enum	Context for comparison
`volume`	object	`calls_per_day`, `avg_input_tokens`, `avg_output_tokens` for daily/monthly cost projections

Returns: pricing, capabilities, quality tiers, and projected costs per model.

`get_pricing`

Raw pricing data lookup with filters by model, provider, price ceiling, and capabilities.

Parameter	Type	Description
`model_id`	string	Specific model ID
`provider`	string	Filter by provider, e.g. `anthropic`
`max_input_price`	number	Max input price per million tokens (USD)
`capabilities`	string[]	Required capabilities: `tool_calling`, `json_output`, `streaming`, `vision`
`min_context_window`	number	Minimum context window in tokens
`limit`	number	Max results (1–100, default 20)

`check_price_changes`

See what model pricing has changed since a given date.

Parameter	Type	Description
`since`	string (required)	ISO date, e.g. `2026-04-01`
`model_id`	string	Filter to a specific model
`provider`	string	Filter to a specific provider

Returns: price increases, decreases, new models, and deprecations.

Data Freshness

Pricing data is refreshed every 4 hours from OpenRouter. Each response includes a data_freshness timestamp so you know how current the data is.

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