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Mistral X-Large vs Grok 4

Mistral vs xAI. Specs, benchmarks, and real per-task cost — all in one page.

Verdict

Grok 4 leads on LMSYS ELO (1358 vs 1318). Mistral X-Large is ~2.5× cheaper on a 3:1 input:output blend. Mistral X-Large is open-weights, the other is proprietary.

Mistral

Mistral X-Large

European frontier model. EU-hosted inference, strong European language coverage, Apache-licensed weights.

EU data residencyMultilingual strengthOpen license

xAI

Grok 4

xAI’s latest. Real-time X search integration, strong on current events and meme-literate tasks.

Live web/X accessPersonalityFast inference on Colossus

Pricing

Input / 1M$2.00$5.00

Output / 1M$6.00$15.00

Context256K256K

Max output16K32K

LicenseOpen weightsProprietary

Released2026-01-282026-03-01

Benchmarks

LMSYS ELO1318.01358.0

MMLU Pro83.586.2

HumanEval88.088.4

MATH78.286.5

IFEval86.585.0

Per-task cost

Summarize a 1-hour meeting transcript$0.033$0.082

Review a 500-line pull request$0.028$0.070

Answer a customer support ticket$0.011$0.027

Extract structured data from a resume$0.016$0.040

Debug a stack trace with context$0.024$0.060

Per-call cost using published token counts for each task. Real-world prompts vary.

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