Anthropic
Claude Opus 5
Claude Opus 5 is a Anthropic model with 1M context, $5 in / $25 out per million tokens, last verified October 1, 2026. Open weights: no. Status: Superseded since September 22, 2026; the current pick is Claude Opus 5.5. Public-board scores are linked to the publisher; vendor-only figures stay in the watch-out, not on the board.
Claude Opus 5 is Anthropic's July 2026 agentic-coding model, now 'Active (legacy)'. Its successor Opus 5.5 has lower base input/output prices ($4/$20 vs $5/$25 per million tokens); performance depends on the workload and evaluation settings.
Recorded profile verification October 1, 2026Individual provider fields may change
| Specification | Claude Opus 5 |
|---|---|
| Provider | Anthropic |
| Tier | Frontier |
| Context window | 1M |
| Max output | 128K |
| Input / 1M tokens | $5 |
| Output / 1M tokens | $25 |
| Weights | Closed |
| Parameters | Not verifiedUnverified |
| Reasoning levels | low, medium, high, xhigh, max |
| Modalities | text, image |
| API model id | claude-opus-5 |
| Released | July 24, 2026 |
Pricing tiers: Standard $5/$25 per MTok with no long-context surcharge. Cache reads $0.50; 5-minute writes $6.25 and 1-hour writes $10. Batch $2.50/$12.50. First-party Fast research preview $10/$50, unavailable with Batch. US-only inference adds 10% where supported. Batch 300K output requires output-300k-2026-03-24; standard stays 128K. Knowledge cutoff May 2026; retirement not sooner than July 24, 2027.
Publisher evidence
Published benchmark results
Each result keeps its source date visible. Dates refer to source publication or capture unless the source explicitly states when it measured the result. A missing benchmark is not treated as a zero.
| Benchmark | Score | Source date | Source |
|---|---|---|---|
| Humanity's Last Exam | 63.6% | 2026-09-01 | Anthropic Fable 5.1 comparison table (vendor, with tools; 56.6 no tools) · View source |
| Terminal-Bench 2.1Cross-provider quotation; common effort and experiment date unverifiedCross-model comparability not verified | 89.1% | 2026-09-02 | Google Gemini 3.8 Flash evaluation table quoting public leaderboard / Artificial Analysis, Terminus 2; not a Google-run Opus evaluation · View source |
Best for
- Complex agentic coding
- Enterprise work
- Long-context analysis
Watch out
History
Claude Opus 5 timeline
Release and status events for this model that passed two-source verification — dated, sourced, and linked.
- Claude Opus 5ReleaseJuly 24, 2026Anthropic announcement
Source receipts
Catalog figures for this model were checked against the following sources.
- Claude model overview — whole-profile source check October 1 (accessed 2026-10-01)
- Claude current API pricing, caching and inference geography (accessed 2026-10-01)
- Anthropic — Claude Opus 5 (accessed 2026-08-29)
- Anthropic news — Claude Opus 5 (accessed 2026-08-29)
- Anthropic — Claude Opus 5.5 (Opus 5 successor) (accessed 2026-09-26)
- Anthropic selectable effort levels (separate from adaptive thinking mode) (accessed 2026-10-01)
Common questions
Claude Opus 5
Answered from the verified figures on this page rather than general guidance.