Compare · ModelsLive · 2 picked · head to head
GPT-5 Chat vs Kimi K2 0711
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5 Chat wins on 4/6 benchmarks
GPT-5 Chat wins 4 of 6 shared benchmarks. Leads in coding · knowledge · language.
Category leads
coding·GPT-5 Chatknowledge·GPT-5 Chatlanguage·GPT-5 Chatmath·Kimi K2 0711reasoning·Kimi K2 0711
Hype vs Reality
Attention vs performance
GPT-5 Chat
#1 by perf·#1 by attention
Kimi K2 0711
#61 by perf·no signal
Best value
Kimi K2 0711
2.7x better value than GPT-5 Chat
GPT-5 Chat
14.6 pts/$
$5.63/M
Kimi K2 0711
39.2 pts/$
$1.43/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
moonshotai
private · undisclosed
Head to head
6 benchmarks · 2 models
GPT-5 ChatKimi K2 0711
Aider polyglot
GPT-5 Chat leads by +28.9
Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework.
GPT-5 Chat
88.0
Kimi K2 0711
59.1
HELM · GPQA
GPT-5 Chat leads by +13.9
GPT-5 Chat
79.1
Kimi K2 0711
65.2
HELM · IFEval
GPT-5 Chat leads by +2.5
GPT-5 Chat
87.5
Kimi K2 0711
85.0
HELM · MMLU-Pro
GPT-5 Chat leads by +4.4
GPT-5 Chat
86.3
Kimi K2 0711
81.9
HELM · Omni-MATH
Kimi K2 0711 leads by +0.7
GPT-5 Chat
64.7
Kimi K2 0711
65.4
HELM · WildBench
Kimi K2 0711 leads by +0.5
GPT-5 Chat
85.7
Kimi K2 0711
86.2
Full benchmark table
| Benchmark | GPT-5 Chat | Kimi K2 0711 |
|---|---|---|
Aider polyglot Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework. | 88.0 | 59.1 |
HELM · GPQA | 79.1 | 65.2 |
HELM · IFEval | 87.5 | 85.0 |
HELM · MMLU-Pro | 86.3 | 81.9 |
HELM · Omni-MATH | 64.7 | 65.4 |
HELM · WildBench | 85.7 | 86.2 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| GPT-5 Chat | $1.25 | $10.00 | 128K tokens (~64 books) | $34.38 |
| Kimi K2 0711 | $0.57 | $2.30 | 131K tokens (~66 books) | $10.03 |