All Models

Claude Opus 4.8 Fast

claude-opus Reasoning Tool Calling Attachments Structured Output

Top Claude Opus tier for the hardest reasoning, coding, and long-horizon agents

Providers 3
Released May 28, 2026
Input Modalities text, image, pdf
Output Modalities text
Tarsk Use coding

Available Providers (3)

Provider Model ID Input Cost Output Cost Context Max Output Docs
OpenRouter anthropic/claude-opus-4.8-fast $10/MTok $50/MTok 1M 128K
Vercel AI Gateway anthropic/claude-opus-4.8-fast $10/MTok $50/MTok 1M 128K
Venice AI claude-opus-4-8-fast $12/MTok $60/MTok 1M 128K

Capabilities

Reasoning
Tool Calling
Attachments
Open Weights
Structured Output