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Kimi K3 vs Mistral Small 3

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 K3 and Mistral Small 3.

Moonshot AI

Kimi K3

Kimi K3 is an ultra-large-scale, open-weight multimodal reasoning model from Moonshot AI. It is suited for complex coding, knowledge work, and long-horizon agentic workflows, and is particularly strong at navigating...

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Mistral

Mistral Small 3

Mistral Small 3 is a 24B-parameter language model optimized for low-latency performance across common AI tasks. Released under the Apache 2.0 license, it features both pre-trained and instruction-tuned versions designed...

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Technical Specifications

SpecificationKimi K3Mistral Small 3
ProviderMoonshot AIMistral
Context Window1,048,576 tokens32,768 tokens
Agent SuitabilityN/A84/100
Time to First Token (TTFT)N/A120 ms
Deployment Modelmanaged apimanaged api
Production Stabilitybetastable
API AvailableYesYes
Released Date2026-07-162025-01-30

API Pricing Comparison

Input Price per Million Tokens

Kimi K3

$3.00

Mistral Small 3

$0.10

Output Price per Million Tokens

Kimi K3

$15.00

Mistral Small 3

$0.30

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
N/Avs8120.0%
Kimi K3
Mistral Small 3
HumanEvalPython coding & logic synthesis
N/Avs8300.0%
Kimi K3
Mistral Small 3
MATHComplex mathematical problem solving
N/Avs6800.0%
Kimi K3
Mistral Small 3
GPQAGraduate-level expert reasoning
N/Avs4500.0%
Kimi K3
Mistral Small 3
HellaSwagCommonsense reasoning and inference
N/Avs8500.0%
Kimi K3
Mistral Small 3
MT-BenchMulti-turn conversation flow quality
N/Avs830.0%
Kimi K3
Mistral Small 3

Kimi K3 Quirks & Gotchas

No developer gotchas reported.

Mistral Small 3 Quirks & Gotchas

  • โ–ธFastest TTFT at lowest cost โ€” ideal for high-volume classification
  • โ–ธNot designed for complex reasoning โ€” route multi-step tasks to Mistral Large 3