Anthropic
Claude Sonnet 5.5 (Default Fallback)
ReasoningClosed weights
- Intelligence
- 51.9
- Rank 12 of 744 measured models
- Output speed
- 98.4 t/s
- Rank 172 of 403 measured models
- Price/1M
- $4
- Rank 532 of 659 measured models
- Context window
- 1M
- Rank 84 of 1199 measured models
- Cost per task
- $2.01
- Rank 164 of 193 measured models
Claude Sonnet 5.5 (Xhigh, Default Fallback) scores 51.9 on the Artificial Analysis Intelligence Index, ranking 12th of 744 measured models. The closest models on this index are Gemini 4 Argon (High) (52.6), Muse Wonder (Max) (52.4), and GPT-6.1 Sol (51.8). At $4 per million tokens (3:1 input/output blended price), it is cheaper than Muse Wonder (Max) ($8), priced close to Gemini 4 Argon (High) ($4) and GPT-6.1 Sol ($4). With an output speed of 98.4 t/s, it is faster than GPT-6.1 Sol (47.9 t/s), slower than Muse Wonder (Max) (131 t/s).
Models at a similar level
The closest models on the Intelligence Index, one configuration per family.
- GPT-6 Astra
OpenAI · $20 · 43.9 t/s
52.7+0.8$2043.9 t/sCompare - Gemini 4 Argon (High)
Google · $4 · —
52.6+0.7$4—Compare - Muse Wonder (Max)
Meta · $8 · 131 t/s
52.4+0.5$8131 t/sCompare - GPT-6.1 Sol
OpenAI · $4 · 47.9 t/s
51.8−0.1$447.9 t/sCompare
