Claude Opus 5.5
Still first on Terminal-Bench and WebDev. Second on Android Bench 2.0 long-horizon at 37.3%; second on sudo L7 at 45.6%, with Sonnet 5.5 leading at 50.6%. Cheaper models fit batch jobs.
Anthropic · Proprietary · Context 1M · $4 / $20 per million tokens · Usual agent Claude Code · Fetched 2026-10-10
Benchmark scores
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Use it or not
Why
- First on Terminal-Bench and LMArena WebDev, covering terminal and frontend.
- On Terminal-Bench it leads Sonnet 5.5 by three points (64.8% vs 61.8%) and the run costs less ($4.7k vs $7.3k).
When not
- For batch or CI work, GPT-6.1 Sol ties for 3rd on Terminal-Bench at 58.2% and $634.24.
- For frontend only, Claude Sonnet 5.5 scores 1770 on WebDev at half the token price ($2 / $10).
- Latency: the Android Bench long run averages 56.6 hours.
- Production judgment: trails Sonnet 5.5 on sudo L7 (50.6% vs 45.6%).