xAI: Grok 4
Analysis Summary
Grok 4 is xAI's flagship reasoning model, and its benchmark profile is striking: math index at 92.7, livecodebench at 0.819, GPQA at 0.877, and HLE at 0.239 place it among the strongest performers in the field on technical tasks. The agentic index of 56.4 and tau2 of 0.749 confirm reliable multi-step tool use. Vision, function calling, and a 256K context window round out a very capable feature set.
For businesses, Grok 4 is a strong fit for autonomous coding agents, complex mathematical or scientific analysis, and long-document reasoning. The combination of vision and tool use makes it versatile across content, data, and engineering workflows. Its main constraint is cost: at $3 input and $15 output, it is expensive and best reserved for high-value tasks.
Teams that need frontier-level coding and reasoning performance, and can justify the price, will find Grok 4 a compelling option. Pair it with a cheaper model for routine or high-volume calls to manage spend effectively.
Assessed June 30, 2026
Editorial notes
xAI Grok 4 delivers exceptional coding and math performance, strong agentic capability, vision support, and a 256K context window, at a premium price point.
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
How xAI: Grok 4 compares
XAI: Grok 4 ranks #63 of 385 AI models we track for overall intelligence, #72 of 293 for agentic tasks. Its 256K-token context window is larger than 70% of the models we list. At $3.00 per million input tokens it is cheaper than 10% of comparable models.
About xAI: 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..
Capabilities
Performance Indices
Source: Artificial Analysis
Benchmark Scores
Intelligence
Technical
Content
Benchmark data from Artificial Analysis and Hugging Face
How does xAI: Grok 4 stack up?
Compare side-by-side with other professional models.
Model Information
| OpenRouter ID |
x-ai/grok-4
|
| Provider | x-ai |
| Release Date | July 9, 2025 |
| Context Length | 256,000 tokens |
| Status | Active |
Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $3.00 | $0.003000 |
| Output | $15.00 | $0.015000 |
Leaderboard Categories
External Resources
Frequently asked questions about xAI: Grok 4
How much does xAI: Grok 4 cost?
xAI: Grok 4 costs $3.00 per million input tokens and $15.00 per million output tokens.
What is the context window of xAI: Grok 4?
xAI: Grok 4 has a context window of 256,000 tokens (256K).
What can xAI: Grok 4 do?
xAI: Grok 4 supports image/vision input, tool use, and function calling.
Who created xAI: Grok 4?
xAI: Grok 4 is developed by xAI and was released on July 9, 2025.
