Grok 4

Grok 4 is xAI's latest reasoning model with a 256k context window. It supports parallel tool calling, structured outputs, and both image and text inputs. Note that reasoning is not exposed, reasoning

Creator: xAI
Lifecycle: Active
Context: 256.0K
Max output: —
Released: Jul 9, 2025
Status: up

Input: $3.00 / 1M tokens
Output: $15.00 / 1M tokens
Cached read: $0.75 / 1M tokens
Cached write: — / 1M tokens
Batch discount: —%
Source: OpenRouter
Verified: Apr 5, 2026 (High)

Capabilities

Modalities: imagetextfile→text
Capabilities: reasoningimageInputpromptCachingfunctionCallingstructuredOutputs

Official Links

Intro

https://openrouter.ai/x-ai/grok-4

Docs

https://openrouter.ai/x-ai/grok-4

Pricing

https://openrouter.ai/models

Benchmark Coverage

Benchmark	Version	Score	Date	Source	Notes

Release History

Release	Alias	Lifecycle	Release Date	Deprecation	Shutdown	Summary
Grok 4	x-ai-grok-4	Active	Jul 9, 2025	—	—	Model available via OpenRouter.

Host Coverage

Host	Type	Context	Pricing Note	Differences
OpenRouter	aggregator	256.0K	$3.00/1M in · $15.00/1M out via OpenRouter	—

Migration Guidance

Change Events

Date	Type	Title	Description	Source
Jul 9, 2025	family_added	Grok 4 published	Model made available via OpenRouter.	OpenRouter

Other models from xAI

Grok 2, Grok 3, Grok 3 Beta, Grok 3 Mini, Grok 3 Mini Beta, Grok 4 Fast, Grok 4.1 Fast, Grok 4.20, Grok 4.20 Beta, Grok 4.20 Multi-Agent, Grok Code Fast 1