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The Cline API gives you access to models from multiple providers through a single endpoint. Model IDs follow the provider/model-name format, the same convention used by OpenRouter.

Model ID Format

Every model is identified by a string in the format:
provider/model-name
For example:
  • anthropic/claude-sonnet-4-6 - Claude Sonnet 4.6 from Anthropic
  • openai/gpt-4o - GPT-4o from OpenAI
  • google/gemini-2.5-pro - Gemini 2.5 Pro from Google
Pass this string as the model parameter in your Chat Completions request.
Model IDProviderContext WindowReasoningBest For
anthropic/claude-sonnet-4-6Anthropic200KYesGeneral coding, analysis, complex tasks
anthropic/claude-sonnet-4-5Anthropic200KYesBalanced performance and cost
openai/gpt-4oOpenAI128KNoMultimodal tasks, fast responses
google/gemini-2.5-proGoogle1MYesVery long context, document analysis
deepseek/deepseek-chatDeepSeek64KNoCost-effective coding tasks
x-ai/grok-3xAI128KYesReasoning-heavy tasks
Model availability and pricing change over time. Check app.cline.bot for the latest catalog.

Free Models

These models are available at no cost. They are a good starting point for experimentation and lightweight tasks:
Model IDProviderContext Window
minimax/minimax-m2.5MiniMax1M
kwaipilot/kat-coder-proKwaipilot32K
z-ai/glm-5Z-AI128K
Free models have the same API interface as paid models. Just use their model ID:
curl -X POST https://api.cline.bot/api/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "minimax/minimax-m2.5",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Reasoning Models

Some models support extended thinking, where the model reasons through a problem before responding. When using these models:
  • Reasoning content appears in delta.reasoning during streaming
  • Some providers return encrypted reasoning blocks in delta.reasoning_details
  • Reasoning tokens are counted separately from output tokens
Models with reasoning support include most Claude, Gemini 2.5, and Grok 3 models. Check the model’s supportsReasoning capability in the model catalog.

Choosing a Model

If you need…Consider
Best coding performanceanthropic/claude-sonnet-4-6
Long document analysisgoogle/gemini-2.5-pro (1M context)
Fast, cheap responsesdeepseek/deepseek-chat
Free experimentationminimax/minimax-m2.5
Multi-modal (text + images)openai/gpt-4o or anthropic/claude-sonnet-4-6
Complex reasoningAny model with reasoning support
For a deeper comparison of model capabilities and pricing, see the Model Selection Guide.

Image Support

Models that support images accept base64-encoded image content in the messages array:
{
  "model": "anthropic/claude-sonnet-4-6",
  "messages": [
    {
      "role": "user",
      "content": [
        {"type": "text", "text": "What's in this image?"},
        {"type": "image_url", "image_url": {"url": "data:image/png;base64,..."}}
      ]
    }
  ]
}
Not all models support images. Check the model’s supportsImages capability before sending image content.