Claude Opus 4.5
active Active
Claude Opus 4.5 is an active Anthropic LLM API model. As of May 24, 2026 it has no announced deprecation or retirement date.
Lifecycle & specs
- Provider
- Anthropic
- API model ID
claude-opus-4-5-20251101- Status
- active
- Released
- Nov 1, 2025
- Context window
- 200,000 tokens
- Input price
- $5.00 / 1M tokens
- Output price
- $25.00 / 1M tokens
- Pricing checked
- May 22, 2026
Source: official Anthropic documentation ↗ · ✓ verified