Although Claude Opus 4.6 is still available, you should consider migrating to Claude Opus 5 for improved performance.
See Claude Opus 5Models & pricingLegacy models
Claude Opus 4.6Legacy
- Context window
- 1Mtokens
- Max output
- 128Ktokens
- Input pricing
- $5/ MTok
- Output pricing
- $25/ MTok
How it compares to the current lineup
| Model | Context | Max output | Price / MTok | Thinking | Default effort | Knowledge cutoff |
|---|---|---|---|---|---|---|
| Claude Fable 5.1 | 1M | 128K | $10 / $50 | Adaptive (always on) | high | Jun 2026 |
| Claude Opus 5 | 1M | 128K | $5 / $25 | Adaptive | high | May 2026 |
| Claude Opus 4.6This modelLegacy | 1M | 128K | $5 / $25 | Adaptive (extended deprecated) | high | May 2025 |
| Claude Sonnet 5 | 1M | 128K | $2 / $10 | Adaptive | high | Jan 2026 |
| Claude Haiku 4.5 | 200K | 64K | $1 / $5 | Extended | — | Feb 2025 |
Specifications
Pricing
- Input
- $5 / MTok
- Output
- $25 / MTok
- 5m cache write
- $6.25 / MTok
- 1h cache write
- $10 / MTok
- Cache read
- $0.50 / MTok
- Batch API
- 50% discount on input and output
- Full price list
- Pricing
Capabilities
- Context window
- 1M tokens
- Max output
- 128K tokens
- Max output (Batch API, beta)
- 300K tokens
- Thinking
- Adaptive (extended deprecated)
- Default effort
high- Input → output
- Text and images → text
- Reliable knowledge cutoff
- May 2025
- Training data cutoff
- Aug 2025
Availability
- Status
- Active (legacy)
- Released
- February 5, 2026
- Retirement
- Not sooner than February 5, 2027
Resources
What changes when moving from Claude Opus 4.6 and earlier Opus models to Claude Opus 5.
The current Opus model: overview, specs, and resources.
Reference
The system prompt Claude Opus 4.6 uses on claude.ai and the Claude apps.
Safety evaluations and deployment decisions for Claude Opus 4.6.
Full price list, including batch discounts and prompt caching rates.
How model IDs, aliases, and pinned snapshots work.
Lifecycle status and retirement commitments for every Claude model.
Claude Opus 4.6 uses the InvokeModel Bedrock integration and Bedrock-style model IDs.
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