AnthropicClaude Opus 5.5 (Adaptive Reasoning, Max Effort, Default Fallback)
- Released
- Sep 22, 2026
- Tracked since
- 2026-09-23
Intelligence index57.6Ranks 1 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, Max 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
Artificial Analysis has not published this metric for this model.
History
1Intelligence index
Unchanged across 62 days of records
Output
Unchanged across 62 days of records
Output throughput
Unchanged across 62 days of records
Cheaper at this level
Models with a comparable intelligence index and a lower output priceNo cheaper model at this capability level