Claude Opus 5
Anthropic's larger model for demanding problems.
Claude Opus 5 is an Anthropic model with a 1M-token context window. It reads images and lets you choose how hard it thinks.
Facts
- Context window
- 1M tokens
- Input
- Text and images
- Thinking effort
- Adjustable, up to Max
- Speed
- Standard
- Available on
- All plans
- Intelligence rank at Vani
- #6
Based on data from Artificial Analysis (artificialanalysis.ai). The ranking is Vani's ordering of the models it offers and is not endorsed by Artificial Analysis. Source
Guide
Best for
- Hard problems
- Analysis
- Coding
Strengths
- Takes its time on multi-step work
Good to know
- Uses more of your allowance per message than Claude Sonnet 5.5
Compare with
- AnthropicClaude Opus 4.8
Claude Opus 4.8 is an Anthropic model with a 1M-token context window. It reads images and lets you choose how hard it thinks.
Compare side by side - OpenAIGPT-5.5
GPT-5.5 is an OpenAI model with a 1M-token context window. It reads images and lets you choose how hard it thinks.
Compare side by side - Moonshot AIKimi K3
Kimi K3 is a Moonshot AI model with a 1M-token context window. It lets you choose how hard it thinks.
Compare side by side
For developers
Use this model on the Vani API with the OpenAI- or Anthropic-compatible endpoints. Prepaid API prices per 1M tokens:
- Model id
- anthropic/claude-opus-5
- Input
- $3.50
- Output
- $17.50
- Cached input
- $0.35