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Grok 4.3 vs Mistral Large 3 2512

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 Grok 4.3 and Mistral Large 3 2512.

xAI

Grok 4.3

Grok 4.3 is a reasoning model from xAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...

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Mistral

Mistral Large 3 2512

Mistral Large 3 2512 is Mistral’s most capable model to date, featuring a sparse mixture-of-experts architecture with 41B active parameters (675B total), and released under the Apache 2.0 license.

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Technical Specifications

SpecificationGrok 4.3Mistral Large 3 2512
ProviderxAIMistral
Context Window1,000,000 tokens262,144 tokens
Agent Suitability87/100N/A
Time to First Token (TTFT)400 msN/A
Deployment Modelmanaged apiself hostable
Production Stabilitystablestable
API AvailableYesYes
Released Date2026-04-302025-12-01

API Pricing Comparison

Input Price per Million Tokens

Grok 4.3

$1.25

Mistral Large 3 2512

$0.50

Output Price per Million Tokens

Grok 4.3

$2.50

Mistral Large 3 2512

$1.50

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
9240.0%vsN/A
Grok 4.3
Mistral Large 3 2512
HumanEvalPython coding & logic synthesis
9450.0%vsN/A
Grok 4.3
Mistral Large 3 2512
MATHComplex mathematical problem solving
9100.0%vsN/A
Grok 4.3
Mistral Large 3 2512
GPQAGraduate-level expert reasoning
8100.0%vsN/A
Grok 4.3
Mistral Large 3 2512
HellaSwagCommonsense reasoning and inference
9750.0%vsN/A
Grok 4.3
Mistral Large 3 2512
MT-BenchMulti-turn conversation flow quality
940.0%vsN/A
Grok 4.3
Mistral Large 3 2512

Grok 4.3 Quirks & Gotchas

  • Strong coding performance — competitive with Claude Sonnet at similar price point
  • Upgrade to Grok 4.20 for improved reasoning and tool calling

Mistral Large 3 2512 Quirks & Gotchas

No developer gotchas reported.