xAI: Grok 3 Mini Beta

Text input Text output
Author's Description

Grok 3 Mini is a lightweight, smaller thinking model. Unlike traditional models that generate answers immediately, Grok 3 Mini thinks before responding. It’s ideal for reasoning-heavy tasks that don’t demand extensive domain knowledge, and shines in math-specific and quantitative use cases, such as solving challenging puzzles or math problems. Transparent "thinking" traces accessible. Defaults to low reasoning, can boost with setting `reasoning: { effort: "high" }` Note: That there are two xAI endpoints for this model. By default when using this model we will always route you to the base endpoint. If you want the fast endpoint you can add `provider: { sort: throughput}`, to sort by throughput instead.

Key Specifications
Cost
$$$$$
Context
131K
Parameters
2.7T (Rumoured)
Released
Apr 09, 2025
Speed
Ability
Reliability
Supported Parameters

This model supports the following parameters:

Stop Temperature Seed Structured Outputs Response Format Max Tokens Include Reasoning Tool Choice Top P Tools Reasoning Logprobs Top Logprobs
Features

This model supports the following features:

Tools Reasoning Structured Outputs Response Format
Performance Summary

Grok 3 Mini Beta demonstrates a balanced performance profile, excelling in accuracy while maintaining moderate speed and pricing. Its speed performance places it in the 31st percentile, indicating it operates at a moderate pace compared to other models. Pricing is similarly moderate, ranking in the 33rd percentile, suggesting it offers competitive costs. A standout feature is its exceptional reliability, achieving a perfect 100th percentile, meaning it consistently provides usable responses with virtually no technical failures. The model exhibits remarkable accuracy across several benchmarks. It achieved perfect scores in Ethics, Reasoning, and General Knowledge, often being the most accurate model at its price point or speed. Its "thinking before responding" mechanism appears to contribute significantly to these high accuracy rates, particularly in reasoning-heavy tasks. In Coding, it scored an impressive 94.0% accuracy, placing it in the 95th percentile. While its Instruction Following accuracy was 71.7%, this still ranks in the 89th percentile, indicating strong capability. Email Classification showed solid performance at 98.0% accuracy. Grok 3 Mini Beta's key strengths lie in its high accuracy for complex reasoning, ethical considerations, and general knowledge, making it ideal for tasks requiring precision and deep thought. Its primary limitation is its moderate speed, which might not suit applications demanding instantaneous responses.

Model Pricing

Current Pricing

Feature Price (per 1M tokens)
Prompt $0.3
Completion $0.5
Input Cache Read $0.075

Price History

Available Endpoints
Provider Endpoint Name Context Length Pricing (Input) Pricing (Output)
xAI
xAI | x-ai/grok-3-mini 131K $0.3 / 1M tokens $0.5 / 1M tokens
xAI
xAI | x-ai/grok-3-mini 131K $0.6 / 1M tokens $4 / 1M tokens
Benchmark Results
Benchmark Category Reasoning Free Executions Accuracy Cost Duration
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