OpenAI
GPT-5.5
ReasoningClosed weights
- Intelligence
- 33.8
- Rank 102 of 744 measured models
- Coding
- 71.5
- Rank 46 of 298 measured models
- Output speed
- 81.8 t/s
- Rank 226 of 403 measured models
- Price/1M
- $11.25
- Rank 630 of 659 measured models
- Context window
- 922K
- Rank 330 of 1199 measured models
- Cost per task
- $0.902
- Rank 124 of 193 measured models
GPT-5.5 (Medium) scores 33.8 on the Artificial Analysis Intelligence Index, ranking 102nd of 744 measured models. The closest models on this index are GLM-5.2 (33.7), Muse Spark 1.1 (Xhigh) (33.7), and Qwen3.8 27B (33.7). At $11.25 per million tokens (3:1 input/output blended price), it is more expensive than GLM-5.2 ($2.15), Muse Spark 1.1 (Xhigh) ($2), and Qwen3.8 27B ($1.13). With an output speed of 81.8 t/s, it is faster than Qwen3.8 27B (41.3 t/s), about as fast as GLM-5.2 (81.1 t/s), slower than Muse Spark 1.1 (Xhigh) (148 t/s).
Models at a similar level
The closest models on the Intelligence Index, one configuration per family.
- JT-4.1 Flash 236B A21B
China Mobile · — · —
33.9+0.1——Compare - GLM-5.2
Z.AI · $2.15 · 81.1 t/s
33.7−0.1$2.1581.1 t/sCompare - Muse Spark 1.1 (Xhigh)
Meta · $2 · 148 t/s
33.7−0.1$2148 t/sCompare - Qwen3.8 27B
Alibaba · $1.13 · 41.3 t/s
33.7−0.1$1.1341.3 t/sCompare
