Claude Opus 5
Previous-generation Opus; still a strong reasoning and coding model.
Claude Opus 5 was Anthropic’s flagship before Opus 5.5. It remains available for teams pinned to it, with a 1M-token context window.
- Provider
- Anthropic
- Type
- Language model
- Released
- Jul 24, 2026
- Context window
- 1M tokens
- Max output
- 128K tokens
- Price
- $5.00 input / $25.00 output per 1M tokens
- Input
- text, image, file
- Output
- text
- Open weights
- No
Best for
- Coding
- Agents
- Reasoning
- Research
Strengths
- Proven in production
- Deep reasoning
More from Anthropic
- Claude Opus 5.5 — Anthropic. Anthropic’s flagship for demanding reasoning, coding and long-horizon agents.
- Claude Sonnet 5.5 — Anthropic. Near-flagship intelligence at a mid-tier price; the everyday workhorse for builders.
- Claude Haiku 5.5 — Anthropic. Small, fast and inexpensive — built for subagents, summarization and browser use.
- Claude Fable 5.1 — Anthropic. Premium model for long-running agentic workflows, refactors and visual front-end work.