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Grok 4 vs Mistral X-Large

xAI vs Mistral. 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.

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

Mistral

Mistral X-Large

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

EU data residencyMultilingual strengthOpen license

Pricing

Input / 1M$5.00$2.00

Output / 1M$15.00$6.00

Context256K256K

Max output32K16K

LicenseProprietaryOpen weights

Released2026-03-012026-01-28

Benchmarks

LMSYS ELO1358.01318.0

MMLU Pro86.283.5

HumanEval88.488.0

MATH86.578.2

IFEval85.086.5

Per-task cost

Summarize a 1-hour meeting transcript$0.082$0.033

Review a 500-line pull request$0.070$0.028

Answer a customer support ticket$0.027$0.011

Extract structured data from a resume$0.040$0.016

Debug a stack trace with context$0.060$0.024

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

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