claude-opus-5-5

Limited signal
Ranked #1 in the capability rankings
Reasoning
Tools
Vision
Multimodal
1M
Files

Standard & Paid Price

The locked value is the exact Paid Price after your first top-up; the discount is derived from the two absolute prices
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MeterStandard PricePaid PriceSave
Input price$4.0000 / 1M tokens$2.8000 / 1M tokens-30%
Completion price$20.0000 / 1M tokens$14.0000 / 1M tokens-30%
Cache read price$0.2000 / 1M tokens$0.1400 / 1M tokens-30%
Cache creation price$5.0000 / 1M tokens$3.5000 / 1M tokens-30%
Cache creation price$8.0000 / 1M tokens$5.6000 / 1M tokens-30%
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Description

Anthropic Claude Opus 5.5 — built for long-running agentic coding and knowledge work, at a lower price than Claude Opus 5. It accepts text and image input, has a 1,000,000-token context window, and supports up to 128,000 output tokens. Adaptive thinking is always on; the effort setting controls how deeply it reasons, with medium as the default.

Capabilities

Input modalities
text, image
Output modalities
text
Tasks
chat, reasoning, vision, file-video-understanding

API endpoints

  • POST /v1/messages (anthropic)
  • POST /v1/chat/completions (openai)