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Claude Opus 4.7 vs Grok 4

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

Verdict

Claude Opus 4.7 leads on LMSYS ELO (1412 vs 1358). Grok 4 is ~4.0× cheaper on a 3:1 input:output blend.

Anthropic

Anthropic’s frontier reasoning model. Leads SWE-Bench and holds top ranks on long-context coding and agentic workflows.

Best-in-class coding agent behaviorStrong instruction following1M-token context with high recallHigh reliability under tool use

xAI

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$15.00$5.00

Output / 1M$75.00$15.00

Context1.0M256K

Max output64K32K

LicenseProprietaryProprietary

Released2026-03-122026-03-01

Benchmarks

LMSYS ELO1412.01358.0

MMLU Pro92.886.2

HumanEval94.488.4

SWE-Bench72.1—

MATH89.386.5

GPQA66.4—

MMMU79.2—

IFEval92.185.0

Per-task cost

Summarize a 1-hour meeting transcript$0.263$0.082

Review a 500-line pull request$0.270$0.070

Answer a customer support ticket$0.105$0.027

Extract structured data from a resume$0.150$0.040

Debug a stack trace with context$0.240$0.060

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

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