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Available Models

ScaleLLM provides access to 9 SOTA models from Anthropic and Google.

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Model Overview

ModelProviderContextSpeedBest For
claude-opus-4.5Anthropic200KSlowerComplex reasoning, architecture
claude-sonnet-4.5Anthropic200KBalancedGeneral coding
claude-sonnet-4Anthropic200KBalancedPrevious generation
claude-haiku-4.5Anthropic200KFastQuick tasks
gemini-3-pro-previewGoogle1MBalancedLong context
gemini-3-pro-image-previewGoogle1MBalancedMultimodal
gemini-3-flashGoogle1MVery FastSpeed & cost
gemini-2.5-computer-use-previewGoogle1MBalancedAutomation
gpt-oss-120b-mediumOpen Source128KBalancedOpen source

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Claude Models

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claude-opus-4.5

Most capable model. Use for complex architectural decisions, deep debugging, multi-step reasoning.

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claude-sonnet-4.5

Recommended for most tasks. Best balance of speed and capability for everyday coding.

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claude-sonnet-4

Previous generation Sonnet model.

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claude-haiku-4.5

Fastest Claude model. Great for quick completions, simple refactors, and high-volume tasks.

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Gemini Models

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gemini-3-pro-preview

Google’s latest with 1M token context. Excellent for analyzing large codebases.

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gemini-3-pro-image-preview

Multimodal model. Use for UI work, screenshot analysis, diagram understanding, and image generation.

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gemini-3-flash

Ultra-fast and cost-effective. Ideal for rapid iteration.

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gemini-2.5-computer-use-preview

Specialized for computer use and automation tasks.

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Choosing a Model

TaskModel
Complex architectureclaude-opus-4.5
General codingclaude-sonnet-4.5
Quick editsclaude-haiku-4.5
Large codebasegemini-3-pro-preview
UI/screenshotsgemini-3-pro-image-preview
Fast iterationgemini-3-flash
Automationgemini-2.5-computer-use-preview

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Usage

Just change the model parameter: 
curl https://api.scalellm.dev/v1/chat/completions \
  -H "Authorization: Bearer sk_your_key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4.5",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

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List Models

curl https://api.scalellm.dev/v1/models \
  -H "Authorization: Bearer sk_your_key"