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ModelsGrok 4.3
X

Grok 4.3

xAI

Real-time X integration, top-tier coding and reasoning.

FrontierVision
Lab page

Released

May 28, 2026

Context

256K

Pricing

$3.00/$15

per 1M tok

Best at

Real-time web

Performance

Benchmarks

Chatbot Arena
1498#4/17

Crowdsourced head-to-head chat preference Elo from LMArena. Captures perceived helpfulness and vibe across real-world prompts.

SWE-bench Verified
75.8#2/17

Share of real GitHub issues a model can autonomously resolve end-to-end (with tests passing). The de-facto agentic coding benchmark.

AIME 2025
95.0#4/16

American Invitational Mathematics Examination — competition math that rewards deep, multi-step reasoning. Reported as % solved.

GPQA Diamond
87.3#5/17

Google-proof graduate-level science Q&A (physics, biology, chemistry). PhD-level questions that resist web lookup.

MMLU-Pro
85.0#5/17

Harder, 10-way multiple-choice version of MMLU across 14 academic and professional domains. Breadth-of-knowledge signal.

Aider Polyglot
83.0#3/17

Editing a real codebase across multiple languages. Measures practical, instruction-following coding skill (not just generation).

OSWorld
36.5#6/16

Computer-use / agentic benchmark: completing real desktop OS tasks (apps, files, browsers). The leading autonomy metric.

Value score: 72/100

Quality-per-dollar blend of Chatbot Arena Elo against API price. Free / open models are scored against a floor.

API pricing

Input$3.00per 1M tokens
Output$15per 1M tokens
1M tokens blended$18in + out

Capabilities

  • Real-time web
  • Top coding
  • Uncensored by default
TextVisionReasoningCode

Closest rivals

By Chatbot Arena Elo

  • G

    Gemini 3.1 Pro

    Google

    1505
  • A

    Claude Sonnet 4.6

    Anthropic

    1486
  • OA

    GPT-5.5

    OpenAI

    1512

More from

xAI

X

Grok 4 Fast

Reasoning model tuned for low latency.

Data last checked Jun 16, 2026 (1mo ago)

ModelLab

An independent dashboard for comparing frontier AI models. Benchmark scores are drawn from public model cards, papers, and leaderboards. Always verify against the original source before making decisions.

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  • About the data

Sources

  • LMArena ↗
  • SWE-bench ↗
  • LiveBench ↗

Data snapshot last checked June 17, 2026.

Not affiliated with any AI lab. Scores are approximations.