xAI: Grok 4
Analysis Summary
Grok 4 is xAI's flagship model, with an intelligence index of 41.5 and a coding index of 40.5, placing it in the very strong tier of the current field. Its agentic index of 56.4 and terminalbench score of 0.379 are among the higher values in the database, and math performance at 92.7 is world-class. Vision, tool use, and function calling are all supported, with a 256K context window.
For businesses, Grok 4 is well suited to complex coding tasks, autonomous agent workflows, long-document analysis, and multimodal use cases. Its livecodebench score of 0.819 and tau2 of 0.749 confirm strong real-world coding and agentic reliability. Instruction following and long-context performance are both above average.
At $3 input and $15 output per million tokens, it is priced at the premium tier. Teams running high-value engineering, research, or agentic workflows where accuracy and depth justify the cost will find Grok 4 a capable and well-rounded choice from an established provider.
Assessed June 6, 2026
Editorial notes
Grok 4 from xAI delivers very strong reasoning, coding, and agentic performance with vision support and a 256K context.
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 #55 of 378 AI models we track for overall intelligence, #36 of 315 for coding, #63 of 289 for agentic tasks. Its 256K-token context window is larger than 71% 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).
Is xAI: Grok 4 good for coding?
On our coding benchmark index, xAI: Grok 4 ranks #36 of 315 models, placing it in the top quartile of the field for code generation and debugging.
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.
