AnthropicClaude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)
- Released
- Sep 22, 2026
- Tracked since
- 2026-09-23
Intelligence index53.6Ranks 3 of 664 models with this metric
Coding index—Not tested
Agentic index—Not tested
Capability profile
5 axes vs. site averageClaude Opus 5.5 (Adaptive Reasoning, High Effort, Default Fallback)
Site average
Some dimensions have no data yet — marked on the chart
Pricing
per 1M tokens- Input
- $4.00
- Output
- $20.00
- Cache read
- $0.200
- Cache write
- $5.00
Performance
- Output throughput
- 87 tokens/sec
- Time to first token
- 36.21s
- First answer token
- 36.21s
- End-to-end response
- 41.93s
History
1Intelligence index
Unchanged across 62 days of records
Output
Unchanged across 62 days of records
Output throughput
90→87
Cheaper at this level
Models with a comparable intelligence index and a lower output priceNo cheaper model at this capability level