Anthropic
Claude Opus 5.5 (Default Fallback)
ReasoningClosed weights
- Intelligence
- 42.3
- Rank 49 of 744 measured models
- Output speed
- 77.2 t/s
- Rank 231 of 403 measured models
- Price/1M
- $8
- Rank 603 of 659 measured models
- Context window
- 1M
- Rank 84 of 1199 measured models
- Cost per task
- $0.551
- Rank 109 of 193 measured models
Claude Opus 5.5 (Low, Default Fallback) scores 42.3 on the Artificial Analysis Intelligence Index, ranking 49th of 744 measured models. The closest models on this index are GPT-5.6 Terra (42.1), Claude Opus 4.8 (batch) (41.8), and GLM-5.3-Flash (41.8). At $8 per million tokens (3:1 input/output blended price), it is more expensive than GPT-5.6 Terra ($4.50) and GLM-5.3-Flash ($0.237). With an output speed of 77.2 t/s, it is faster than GLM-5.3-Flash (61.1 t/s), slower than GPT-5.6 Terra (107 t/s).
Models at a similar level
The closest models on the Intelligence Index, one configuration per family.
- Claude Haiku 5.5
Anthropic · $0.20 · 236 t/s
43.4+1.1$0.20236 t/sCompare - GPT-5.6 Terra
OpenAI · $4.50 · 107 t/s
42.1−0.2$4.50107 t/sCompare - Claude Opus 4.8 (batch)
Anthropic · — · —
41.8−0.5——Compare - GLM-5.3-Flash
Z.AI · $0.237 · 61.1 t/s
41.8−0.5$0.23761.1 t/sCompare
