OpenTools proxies your requests to any LLM that OpenRouter supports, including those that aren’t capable of tool use.

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Overview

OpenTools works with a wide range of language models through OpenRouter. This integration allows you to use tools with models that may not natively support tool use.

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Model Categories

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Native Tool Users

These models have built-in tool-calling capabilities:

  • GPT-4 and GPT-4 Turbo
  • Claude 3 Opus, Sonnet, and Haiku
  • Anthropic Claude 2.1
  • Mistral Large and Medium
  • Llama 3 70B and 8B Instruct

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Enhanced Models

Models without native tool support that OpenTools enhances:

  • GPT-3.5 Turbo
  • Gemini Pro and Flash
  • Cohere Command
  • Older Claude models

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Model Selection

When making requests to OpenTools, you can specify your preferred model:

{
  "model": "anthropic/claude-3-opus-20240229",
  "messages": [...],
  "tools": [...]
}

For optimal performance with complex tools, we recommend using models with strong native tool-calling abilities.

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Pricing

Model costs vary based on provider pricing. OpenTools passes through these costs with no markup. See our pricing page for current rates.

Supported toolsPricing