Compare · ModelsLive · 2 picked · head to head
Kimi K2 Thinking vs Kimi K3.1 Pro
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Kimi K3.1 Pro wins on 4/4 benchmarks
Kimi K3.1 Pro wins 4 of 4 shared benchmarks. Leads in knowledge · math.
Category leads
knowledge·Kimi K3.1 Promath·Kimi K3.1 Pro
Hype vs Reality
Attention vs performance
Kimi K2 Thinking
#113 by perf·#15 by attention
Kimi K3.1 Pro
#29 by perf·#15 by attention
Best value
Kimi K2 Thinking
3.0x better value than Kimi K3.1 Pro
Kimi K2 Thinking
33.7 pts/$
$1.55/M
Kimi K3.1 Pro
11.3 pts/$
$6.00/M
Vendor risk
Who is behind the model
Moonshot AI
$50.0B·Tier 1
Moonshot AI
$50.0B·Tier 1
Head to head
4 benchmarks · 2 models
Kimi K2 ThinkingKimi K3.1 Pro
Chess Puzzles
Kimi K3.1 Pro leads by +22.1
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
Kimi K2 Thinking
20.0
Kimi K3.1 Pro
42.1
GPQA diamond
Kimi K3.1 Pro leads by +17.1
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Kimi K2 Thinking
79.0
Kimi K3.1 Pro
96.1
OTIS Mock AIME 2024-2025
Kimi K3.1 Pro leads by +17.0
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Kimi K2 Thinking
83.0
Kimi K3.1 Pro
100.0
SimpleQA Verified
Kimi K3.1 Pro leads by +30.6
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
Kimi K2 Thinking
31.6
Kimi K3.1 Pro
62.2
Full benchmark table
| Benchmark | Kimi K2 Thinking | Kimi K3.1 Pro |
|---|---|---|
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 20.0 | 42.1 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 79.0 | 96.1 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 83.0 | 100.0 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 31.6 | 62.2 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.60 | $2.50 | 262K tokens (~131 books) | $10.75 | |
| $2.00 | $10.00 | 1.0M tokens (~524 books) | $40.00 |