openrouter

OpenRouter Provider

OpenRouter provider for the LLM abstraction library.

Configuration

import "github.com/codewandler/llm/provider/openrouter"

// Create provider with default model (anthropic/claude-sonnet-4.5)
p := openrouter.New("your-api-key")

// Or specify a custom default model
p := openrouter.New("your-api-key").WithDefaultModel("openai/gpt-4o")

// Get the default model
defaultModel := p.DefaultModel()

Constants

• openrouter.DefaultModel = "anthropic/claude-sonnet-4.5"

Models

The models.json file contains a curated list of 229 models that support tool calling on OpenRouter.

Generation

The file was generated using the OpenRouter models API with full model data:

curl -s "https://openrouter.ai/api/v1/models" | \
  jq '[.data[] | select(.supported_parameters != null and (.supported_parameters | index("tools")))]' \
  > models.json

Model Data Structure

Each model includes complete information:

• ID and name
• Context length and max completion tokens
• Pricing (prompt, completion, cache read)
• Supported parameters (tools, temperature, etc.)
• Architecture details (modality, tokenizer)
• Default parameters

Accessing Model Data

// Get basic model list (ID, Name, Provider)
models := p.Models()  // Returns 229 tool-enabled models

// Get detailed model data with pricing, context, etc.
modelData, err := openrouter.GetModelData()
for _, m := range modelData {
    fmt.Printf("%s: %d tokens, $%s per prompt token\n", 
        m.Name, m.ContextLength, m.Pricing.Prompt)
}

Contents

The file includes popular models with tool support from:

• Anthropic (Claude Opus, Sonnet, Haiku variants)
• OpenAI (GPT-4, GPT-4o, o3-mini, etc.)
• Google (Gemini models)
• Meta (Llama models)
• Mistral (Mistral, Mixtral models)
• Qwen (Qwen3 models)
• DeepSeek (DeepSeek models)
• And many more providers (229 total)

Usage

The embedded Models() function returns all 229 tool-enabled models from models.json. For real-time data from the API, use FetchModels().