OpenAI
GPT-5.6 Sol
ReasoningClosed weights
- Intelligence
- 44.0
- Rank 43 of 744 measured models
- Coding
- 78.3
- Rank 4 of 298 measured models
- Output speed
- 82.4 t/s
- Rank 222 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
- $1.18
- Rank 141 of 193 measured models
GPT-5.6 Sol (Xhigh) scores 44.0 on the Artificial Analysis Intelligence Index, ranking 43rd of 744 measured models. The closest models on this index are Grok 4.6 (44.3), Step 5 Preview (43.7), and Kimi K3 (43.6). At $8 per million tokens (3:1 input/output blended price), it is more expensive than Grok 4.6 ($3), Step 5 Preview ($1.43), and Kimi K3 ($6). With an output speed of 82.4 t/s, it is faster than Grok 4.6 (50 t/s) and Kimi K3 (43.3 t/s), slower than Step 5 Preview (89.3 t/s).
Models at a similar level
The closest models on the Intelligence Index, one configuration per family.
- Grok 4.6
SpaceXSI · $3 · 50 t/s
44.3+0.3$350 t/sCompare - Step 5 Preview
StepFun · $1.43 · 89.3 t/s
43.7−0.3$1.4389.3 t/sCompare - Kimi K3
Moonshot AI · $6 · 43.3 t/s
43.6−0.4$643.3 t/sCompare - Claude Haiku 5.5
Anthropic · $0.20 · 236 t/s
43.4−0.6$0.20236 t/sCompare
