Author's Description
Grok Beta is xAI's experimental language model with state-of-the-art reasoning capabilities, best for complex and multi-step use cases. It is the successor of [Grok 2](https://x.ai/blog/grok-2) with enhanced context length.
Key Specifications
Supported Parameters
This model supports the following parameters:
Features
This model supports the following features:
Performance Summary
Grok Beta, xAI's experimental language model, demonstrates strong overall performance, particularly excelling in reliability and speed. It consistently performs among the fastest models, ranking in the 77th percentile for speed across five benchmarks. The model exhibits exceptional reliability, achieving a perfect 100th percentile, indicating virtually no technical failures and consistent response delivery. While its pricing is positioned at a premium level (13th percentile), its performance often justifies the cost. In terms of specific benchmarks, Grok Beta achieved perfect accuracy in Email Classification, proving to be the most accurate model at its price point and among models of comparable speed. It also showed very strong performance in Ethics (99.0% accuracy) and General Knowledge (98.5% accuracy). Its Coding capabilities are robust with 90.0% accuracy, placing it in the 80th percentile. The Reasoning benchmark, while still respectable at 64.0% accuracy, represents an area for potential improvement compared to its other high-performing categories. Overall, Grok Beta is a highly reliable and fast model, particularly suited for complex and multi-step use cases as described, with its primary strength lying in its consistent accuracy across various tasks, especially classification.
Model Pricing
Current Pricing
Feature | Price (per 1M tokens) |
---|---|
Prompt | $5 |
Completion | $15 |
Price History
Available Endpoints
Provider | Endpoint Name | Context Length | Pricing (Input) | Pricing (Output) |
---|---|---|---|---|
xAI
|
xAI | x-ai/grok-beta | 131K | $5 / 1M tokens | $15 / 1M tokens |
Benchmark Results
Benchmark | Category | Reasoning | Free | Executions | Accuracy | Cost | Duration |
---|
Other Models by x-ai
|
Released | Params | Context |
|
Speed | Ability | Cost |
---|---|---|---|---|---|---|---|
xAI: Grok 4 | Jul 09, 2025 | — | 256K |
Text input
Image input
Text output
|
★ | ★★★★★ | $$$$$ |
xAI: Grok 3 Mini | Jun 10, 2025 | ~2.7T | 131K |
Text input
Text output
|
★★ | ★★★★★ | $$$$$ |
xAI: Grok 3 | Jun 10, 2025 | ~2.7T | 131K |
Text input
Text output
|
★★★ | ★★★★★ | $$$$$ |
xAI: Grok 3 Mini Beta | Apr 09, 2025 | ~2.7T | 131K |
Text input
Text output
|
★★ | ★★★★★ | $$$$$ |
xAI: Grok 3 Beta | Apr 09, 2025 | ~2.7T | 131K |
Text input
Text output
|
★★★★ | ★★★★ | $$$$$ |
xAI: Grok 2 Vision 1212 | Dec 14, 2024 | — | 32K |
Text input
Image input
Text output
|
★★★★ | ★★★★ | $$$$$ |
xAI: Grok 2 1212 | Dec 14, 2024 | — | 131K |
Text input
Text output
|
★★★★ | ★★★★ | $$$$$ |
xAI: Grok Vision Beta | Nov 18, 2024 | — | 8K |
Text input
Image input
Text output
|
★★★★ | ★★★ | $$$$$ |