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Kimi K2.5 vs Kimi K2 Thinking

How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Kimi K2.5 and Kimi K2 Thinking.

Moonshot AI

Kimi K2.5

Kimi K2.5 is Moonshot AI's native multimodal model, delivering state-of-the-art visual coding capability and a self-directed agent swarm paradigm. Built on Kimi K2 with continued pretraining over approximately 15T mixed...

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Moonshot AI

Kimi K2 Thinking

Kimi K2 Thinking is Moonshot AIโ€™s most advanced open reasoning model to date, extending the K2 series into agentic, long-horizon reasoning. Built on the trillion-parameter Mixture-of-Experts (MoE) architecture introduced in...

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Technical Specifications

SpecificationKimi K2.5Kimi K2 Thinking
ProviderMoonshot AIMoonshot AI
Context Window262,144 tokens262,144 tokens
Agent SuitabilityN/AN/A
Time to First Token (TTFT)N/AN/A
Deployment Modelmanaged apimanaged api
Production Stabilitystablestable
API AvailableYesYes
Released Date2026-01-272025-11-06

API Pricing Comparison

Input Price per Million Tokens

Kimi K2.5

$0.38

Kimi K2 Thinking

$0.60

Output Price per Million Tokens

Kimi K2.5

$2.02

Kimi K2 Thinking

$2.50

Want to test both models live?

Run side-by-side prompt prompts in our dynamic Sandbox. Check execution speeds, latency metrics, and compute actual costs in real-time.

Benchmark Performance Metrics

Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.

MMLUGeneral knowledge & multi-task understanding
8250.0%vs8850.0%
Kimi K2.5
Kimi K2 Thinking
HumanEvalPython coding & logic synthesis
8300.0%vs9100.0%
Kimi K2.5
Kimi K2 Thinking
MATHComplex mathematical problem solving
5900.0%vs8540.0%
Kimi K2.5
Kimi K2 Thinking
GPQAGraduate-level expert reasoning
4100.0%vs5450.0%
Kimi K2.5
Kimi K2 Thinking
HellaSwagCommonsense reasoning and inference
8400.0%vs8880.0%
Kimi K2.5
Kimi K2 Thinking
MT-BenchMulti-turn conversation flow quality
880.0%vs922.0%
Kimi K2.5
Kimi K2 Thinking

Kimi K2.5 Quirks & Gotchas

No developer gotchas reported.

Kimi K2 Thinking Quirks & Gotchas

No developer gotchas reported.