Grok 4
xAI's flagship reasoning model with parallel tool calling. Supports structured outputs, image and text inputs with a 256K context window. Always-on reasoning for maximum depth on complex problems.
Grok 3Benchmarks
This model hasn't been evaluated by Artificial Analysis yet. Benchmark scores will appear once they're published.
Specifications
Providers
Compare with
GPT 5.6 Solvs Grok 4GPT 5.6 Lunavs Grok 4
Claude Fable 5vs Grok 4Claude Opus 4.8vs Grok 4Claude Sonnet 5vs Grok 4Claude Haiku 4.5vs Grok 4
Gemini 3.6 Flashvs Grok 4Gemini 3.5 Flashvs Grok 4Gemini 3.5 Flash-Litevs Grok 4Gemma 4 31Bvs Grok 4Grok 4.5vs Grok 4Grok Build 0.1vs Grok 4Grok 4.1 Fastvs Grok 4
Muse Spark 1.1vs Grok 4
DeepSeek V4 Provs Grok 4DeepSeek V4 Flashvs Grok 4
MiniMax M3vs Grok 4
GLM 5.2vs Grok 4
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Nemotron 3 Ultravs Grok 4
Mistral Small 4vs Grok 4Frequently Asked Questions about Grok 4▼
Who created Grok 4?
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Grok 4 was created by xAI.
Is Grok 4 a reasoning model?
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No, Grok 4 is not a reasoning model. It responds directly without an extended internal thinking step. For tasks requiring deep chain-of-thought reasoning, consider models like Claude, o-series from OpenAI, or Gemini Thinking.
Does Grok 4 support image or vision input?
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No, Grok 4 does not currently support image or vision input. It is a text-only model.
Does Grok 4 support audio?
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No, Grok 4 does not support audio input.
Is Grok 4 open source?
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Grok 4 is a proprietary model developed by xAI. The model weights and training data are not publicly available.
Where can I use Grok 4?
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You can chat with Grok 4 on idapt.app — no separate API key required. idapt is an AI workspace with 200+ models, agents, computers, and tasks. You can also access Grok 4 through xAI's own API or platform.