SpaceXAI: Grok 4.6

Image input Text input File input Text output
Author's Description

Grok 4.6 is SpaceXAI's smartest model with frontier performance on coding, knowledge work, and STEM.

Key Specifications
Cost
$$$$$
Context
500K
Released
Aug 12, 2026
Speed
Ability
Reliability
Supported Parameters

This model supports the following parameters:

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

This model supports the following features:

Tools Structured Outputs Response Format Reasoning
Performance Summary

SpaceXAI's Grok 4.6, released on August 12, 2026, demonstrates frontier performance across key intellectual domains, particularly in coding, knowledge work, and STEM. While its speed performance is moderate, ranking in the 36th percentile, its pricing is positioned at a premium level, falling into the 8th percentile. A standout feature is its exceptional reliability, achieving a 100% success rate across all 8 benchmarks, indicating minimal technical failures. Grok 4.6 exhibits perfect accuracy in Hallucinations, General Knowledge, and Ethics, often being the most accurate model at its price point and speed for these categories. It shows strong capabilities in Coding (96.0% accuracy, 94th percentile), Reasoning (98.0% accuracy, 85th percentile), and Mathematics (95.0% accuracy, 82nd percentile), aligning with its description as a smart model for STEM and knowledge work. Its instruction following is solid at 76.0% accuracy, and email classification is highly accurate at 99.0%. The primary weakness appears to be its premium cost across most benchmarks, despite its high accuracy.

Model Pricing

Current Pricing

Feature Price (per 1M tokens)
Prompt $2
Completion $6
Input Cache Read $0.5
Web Search $5000

Price History

Available Endpoints
Provider Endpoint Name Context Length Pricing (Input) Pricing (Output)
xAI
xAI | x-ai/grok-4.6-20260810 500K $2 / 1M tokens $6 / 1M tokens
xAI
xAI | x-ai/grok-4.6-20260810 500K $4 / 1M tokens $12 / 1M tokens
xAI
xAI | x-ai/grok-4.6-20260810 500K $2 / 1M tokens $6 / 1M tokens
xAI
xAI | x-ai/grok-4.6-20260810 500K $4 / 1M tokens $12 / 1M tokens
Benchmark Results
Benchmark Category Reasoning Strategy Free Executions Accuracy Cost Duration
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