# Claude Opus 5.5

- id: anthropic/claude-opus-5-5
- name: Claude Opus 5.5
- provider: anthropic
- provider_display: Anthropic
- type: llm-reasoning
- context: 1000000
- pricing: input=4.0,output=20.0,cache_read=0.2,cache_write=5.0
- licence: null
- commercial_use: unspecified
- open_weights: false
- release_date: 2026-09-22
- page: https://modelspec.dev/m/anthropic/claude-opus-5-5/
- json: https://modelspec.dev/api/models/anthropic/claude-opus-5-5.json

Null means not researched or not published, never a guess.

## Provenance
- card: https://github.com/turbobeest/modelspec/blob/main/models/anthropic/claude-opus-5-5.md
- models_dev_url: https://models.dev/anthropic

## Reported scores
null