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Grok 4 vs DeepSeek R2

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

Verdict

DeepSeek R2 is ~7.8× cheaper on a 3:1 input:output blend. DeepSeek R2 is open-weights, the other is proprietary.

xAI

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

Live web/X accessPersonalityFast inference on Colossus

DeepSeek

DeepSeek’s reasoning variant. Competes with o4 on math at a fraction of the cost.

Frontier math at open-weights pricingLong CoT traces

Pricing

Input / 1M$5.00$0.55

Output / 1M$15.00$2.19

Context256K128K

Max output32K64K

LicenseProprietaryOpen weights

Released2026-03-012026-01-15

Benchmarks

LMSYS ELO1358.0—

MMLU Pro86.287.8

HumanEval88.490.1

MATH86.594.1

GPQA—71.2

IFEval85.0—

Per-task cost

Summarize a 1-hour meeting transcript$0.082$0.0093

Review a 500-line pull request$0.070$0.0088

Answer a customer support ticket$0.027$0.0034

Extract structured data from a resume$0.040$0.0049

Debug a stack trace with context$0.060$0.0077

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

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