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Claude Opus 4.7 vs Grok 3

A complete head-to-head: pricing, context window, benchmarks, modality coverage, and openness, with a programmatic verdict synthesized from the underlying data.

Updated

Claude Opus 4.7 specs · Grok 3 specs
Verdict by category
  • PriceGrok 3

    Grok 3 publishes pricing ($15.00 / 1M output tokens) while Claude Opus 4.7 does not.

  • Context windowClaude Opus 4.7

    Claude Opus 4.7 accepts 500K tokens vs 128K, 3.9× the room for long documents and codebases.

  • BenchmarksTie

    No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores.

  • ModalitiesTie

    Both handle text, vision.

  • OpennessTie

    Both are closed-weight, API-only.

It's a genuine coin-flip between Claude Opus 4.7 and Grok 3: 1 category wins each, with the rest tied. Grok 3 publishes pricing ($15.00 / 1M output tokens) while Claude Opus 4.7 does not. Claude Opus 4.7 accepts 500K tokens vs 128K, 3.9× the room for long documents and codebases.

No directly comparable public benchmarks are available for both models, check the spec sheets for individual scores. Both target the same set of modalities (text, vision), so the deciding factors are price, context, and raw quality. Both are closed-weight, API-only.

Claude Opus 4.7 is the newer of the two, released 12 months after Grok 3, which usually means a more recent knowledge cutoff and updated safety post-training. Claude Opus 4.7 is usually picked for coding llm and coding agent workloads, while Grok 3 sees more deployments in chatbots and research agent. If pricing matters more than every last benchmark point, run the numbers in the calculator below before committing.

Side-by-side specs

SpecClaude Opus 4.7Grok 3
ProviderAnthropicxAI
ReleasedFeb 2026Feb 2025
Modalitiestext, visiontext, vision
Context window500K tokens128K tokens
Max output,,
Input · 1MPricing not published$3.00 / 1M tokens
Output · 1MPricing not published$15.00 / 1M tokens
Knowledge cutoff,2024-08
Open weightsNoNo
API availableYesYes

Pricing at scale

What you'd actually pay at typical workloads. Numbers come from each model's published per-million-token rates.

  • Light usage, 100k in / 50k out per day, vs $31.50
  • Heavy usage, 1M in / 500k out per day, vs $315
  • RAG workload, 5M in / 200k out per day, vs $540

Light usage, 100k in / 50k out per day: pricing not directly comparable (one or both models are missing public per-token rates). Heavy usage, 1M in / 500k out per day: pricing not directly comparable (one or both models are missing public per-token rates). RAG workload, 5M in / 200k out per day: pricing not directly comparable (one or both models are missing public per-token rates).

Price calculator

Estimated spend for the listed models at your usage. Numbers are derived from each model's published per-million-token rates.

  • Claude Opus 4.7Pricing unavailable
  • Grok 3$1.05

Benchmarks compared

Only sourced numbers. Where a benchmark is missing for one model we show the available value rather than fabricating the other.

Benchmark scores not yet available. We only publish numbers we can source from official model cards or independent leaderboards, see methodology.
Pick Claude Opus 4.7 if

Claude Opus 4.7 fits when…

  • Strongest published SWE-bench Verified scores in agent settings
  • Best-in-class writing quality and voice control
  • Excellent long-context recall and citation discipline
  • Long-context tasks, handles 500K tokens vs 128K for Grok 3.
Pick Grok 3 if

Grok 3 fits when…

  • Real-time X access
  • Reasoning modes
Don't want either?

Consider Claude Sonnet 4.6

Anthropic's mid-tier 4.6 release, the workhorse model behind most production Anthropic deployments.

See Claude Sonnet 4.6 specsClaude Opus 4.7 vs Claude Sonnet 4.6Grok 3 vs Claude Sonnet 4.6

Frequently asked

  • Is Claude Opus 4.7 or Grok 3 cheaper?
    Per-token pricing isn't published for at least one of these models, check each model's spec page for current rates.
  • Which has the larger context window?
    Claude Opus 4.7 accepts 500K tokens vs 128K for Grok 3.
  • Is Claude Opus 4.7 or Grok 3 better for coding?
    Both Claude Opus 4.7 and Grok 3 are competitive on coding benchmarks. See each model's individual spec page for HumanEval and SWE-bench scores where published. For an opinionated pick, consult our Best LLM for Coding ranking.
  • Are either of these models open source?
    Neither model ships open weights, both are accessible only via their respective providers' APIs.
  • When were Claude Opus 4.7 and Grok 3 released?
    Claude Opus 4.7 was released by Anthropic on 2026-02-15. Grok 3 was released by xAI on 2025-02-17.
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