MODEL PROFILE / EDITION 2026.09
Claude Opus 5
Production teams that want near-flagship correctness at half of Fable pricing
Balanced model evidence score; rank 2. No rank delta is shown because there is no prior numeric snapshot.
Best for
Production teams that want near-flagship correctness at half of Fable pricing
Price & access
$5 in / $25 out per 1M; cache read $0.50, cache write $6.25
Evidence summary
First-party launch post and Bedrock card, Anthropic pricing, two human-preference boards and two third-party benchmark leaderboards agree.
Edition status
No prior snapshot. Tracked in the September 2026 baseline.
Strengths
- SWE-bench Verified 96% is the single highest coding score in this evidence base
- Best AA Coding Agent Index v1.4 (68.1) of any model in OpenAI's own table
- Half the token price of Fable 5.1 with a large, well-sampled Arena row (8,431 votes)
- Documented frontend QA behaviour: opened desktop and phone widths, found and fixed an off-screen checkout button
Tradeoffs
- $5/$25 is still premium pricing
- TTFT 77.82 s at max effort
- Fable 5.1 beats it on SWE-bench Pro, Terminal-Bench 4.0, OSWorld and Design Arena
- Effort tier changes its Arena rank by 28 Elo (max vs high)
Score profile
visual 88 · code 96 · agentic 92 · debug 88 · context 92 · speed 55 · value 55
Linked evidence
Evidence source 1 ↗Evidence source 2 ↗Evidence source 3 ↗Evidence source 4 ↗Evidence source 5 ↗Evidence source 6 ↗Evidence source 7 ↗Compare this model on the full scoreboard
Open comparison view →Use the same published data, filters, and side-by-side metrics.