xAI: Grok 4
Analysis Summary
xAI: Grok 4 sits in the Professional tier on our leaderboard, ranked #52 of 557 published models on overall intelligence. At $3.00 input and $15.00 output per 1M tokens, it is among the most expensive on the market. It offers a generous context window for extended reasoning and code review and supports tool use, function calling, vision, and reasoning.
Editorial notes
Grok 4 from xAI delivers strong reasoning, vision support, tool use, and function calling with a 256K context window, backed by standout math and GPQA scores; pricing is moderate and the agentic index is competitive for business workflows.
Assessed May 14, 2026
Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?
Performance Profile
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 |
