Compare · ModelsLive · 2 picked · head to head
Kimi K2.5 vs Kimi K2 Thinking
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Kimi K2.5 wins on 14/16 benchmarks
Kimi K2.5 wins 14 of 16 shared benchmarks. Leads in agentic · knowledge · math.
Category leads
agentic·Kimi K2.5knowledge·Kimi K2.5math·Kimi K2.5language·Kimi K2.5coding·Kimi K2.5
Hype vs Reality
Attention vs performance
Kimi K2.5
#85 by perf·no signal
Kimi K2 Thinking
#77 by perf·no signal
Best value
Kimi K2.5
1.4x better value than Kimi K2 Thinking
Kimi K2.5
49.5 pts/$
$1.05/M
Kimi K2 Thinking
34.4 pts/$
$1.55/M
Vendor risk
Who is behind the model
moonshotai
private · undisclosed
moonshotai
private · undisclosed
Head to head
16 benchmarks · 2 models
Kimi K2.5Kimi K2 Thinking
APEX-Agents
Kimi K2.5 leads by +10.4
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
Kimi K2.5
14.4
Kimi K2 Thinking
4.0
Chess Puzzles
Kimi K2 Thinking leads by +8.0
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
Kimi K2.5
12.0
Kimi K2 Thinking
20.0
FrontierMath-2025-02-28-Private
Kimi K2.5 leads by +6.5
FrontierMath (Feb 2025) · original research-level math problems created by mathematicians, testing capabilities at the boundary of current AI mathematical reasoning.
Kimi K2.5
27.9
Kimi K2 Thinking
21.4
FrontierMath-Tier-4-2025-07-01-Private
Kimi K2.5 leads by +4.1
FrontierMath Tier 4 (Jul 2025) · the most challenging tier of frontier mathematics, containing problems that push the absolute limits of AI mathematical reasoning.
Kimi K2.5
4.2
Kimi K2 Thinking
0.1
GPQA diamond
Kimi K2.5 leads by +4.5
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Kimi K2.5
83.5
Kimi K2 Thinking
79.0
OpenCompass · AIME2025
Kimi K2 Thinking leads by +2.2
Kimi K2.5
91.9
Kimi K2 Thinking
94.1
OpenCompass · GPQA-Diamond
Kimi K2.5 leads by +5.4
Kimi K2.5
88.1
Kimi K2 Thinking
82.7
OpenCompass · HLE
Kimi K2.5 leads by +7.3
Kimi K2.5
28.6
Kimi K2 Thinking
21.3
OpenCompass · IFEval
Kimi K2.5 leads by +1.5
Kimi K2.5
93.9
Kimi K2 Thinking
92.4
OpenCompass · LiveCodeBenchV6
Kimi K2.5 leads by +3.5
Kimi K2.5
80.6
Kimi K2 Thinking
77.1
OpenCompass · MMLU-Pro
Kimi K2.5 leads by +1.9
Kimi K2.5
86.2
Kimi K2 Thinking
84.3
OTIS Mock AIME 2024-2025
Kimi K2.5 leads by +9.1
OTIS Mock AIME 2024–2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Kimi K2.5
92.2
Kimi K2 Thinking
83.0
PostTrainBench
Kimi K2.5 leads by +3.0
Kimi K2.5
10.3
Kimi K2 Thinking
7.3
SimpleQA Verified
Kimi K2.5 leads by +2.3
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
Kimi K2.5
33.9
Kimi K2 Thinking
31.6
Terminal Bench
Kimi K2.5 leads by +7.5
Terminal Bench · tests the ability to accomplish real-world tasks using terminal commands, evaluating shell scripting and CLI tool proficiency.
Kimi K2.5
43.2
Kimi K2 Thinking
35.7
WeirdML
Kimi K2.5 leads by +2.8
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
Kimi K2.5
45.6
Kimi K2 Thinking
42.8
Full benchmark table
| Benchmark | Kimi K2.5 | Kimi K2 Thinking |
|---|---|---|
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 14.4 | 4.0 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 12.0 | 20.0 |
FrontierMath-2025-02-28-Private FrontierMath (Feb 2025) · original research-level math problems created by mathematicians, testing capabilities at the boundary of current AI mathematical reasoning. | 27.9 | 21.4 |
FrontierMath-Tier-4-2025-07-01-Private FrontierMath Tier 4 (Jul 2025) · the most challenging tier of frontier mathematics, containing problems that push the absolute limits of AI mathematical reasoning. | 4.2 | 0.1 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 83.5 | 79.0 |
OpenCompass · AIME2025 | 91.9 | 94.1 |
OpenCompass · GPQA-Diamond | 88.1 | 82.7 |
OpenCompass · HLE | 28.6 | 21.3 |
OpenCompass · IFEval | 93.9 | 92.4 |
OpenCompass · LiveCodeBenchV6 | 80.6 | 77.1 |
OpenCompass · MMLU-Pro | 86.2 | 84.3 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024–2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 92.2 | 83.0 |
PostTrainBench | 10.3 | 7.3 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 33.9 | 31.6 |
Terminal Bench Terminal Bench · tests the ability to accomplish real-world tasks using terminal commands, evaluating shell scripting and CLI tool proficiency. | 43.2 | 35.7 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 45.6 | 42.8 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| Kimi K2.5 | $0.38 | $1.72 | 262K tokens (~131 books) | $7.17 |
| Kimi K2 Thinking | $0.60 | $2.50 | 262K tokens (~131 books) | $10.75 |
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