Compare · ModelsLive · 2 picked · head to head
GPT-5.5 vs Kimi K3
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.5 wins on 2/2 benchmarks
GPT-5.5 wins 2 of 2 shared benchmarks. Leads in reasoning · knowledge.
Category leads
reasoning·GPT-5.5knowledge·GPT-5.5
Hype vs Reality
Attention vs performance
GPT-5.5
#2 by perf·#4 by attention
Kimi K3
#51 by perf·#17 by attention
Best value
Kimi K3
1.5x better value than GPT-5.5
GPT-5.5
4.9 pts/$
$17.50/M
Kimi K3
7.4 pts/$
$8.10/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
Moonshot AI
$18.0B·Tier 1
Head to head
2 benchmarks · 2 models
GPT-5.5Kimi K3
ARC-AGI
GPT-5.5 leads by +0.5
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
GPT-5.5
95.0
Kimi K3
94.5
GPQA diamond
GPT-5.5 leads by +2.8
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
GPT-5.5
93.6
Kimi K3
90.8
Full benchmark table
| Benchmark | GPT-5.5 | Kimi K3 |
|---|---|---|
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 95.0 | 94.5 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 93.6 | 90.8 |
Pricing · per 1M tokens · projected $/mo at 10M tokens