xAI: Grok Build 0.1

Image input Text input Text output
Author's Description

Grok Build 0.1 is xAI’s fast coding model trained specifically for agentic software engineering workflows. It supports text and image inputs with text output, and is optimized for interactive coding...

Key Specifications
Cost
$$$$$
Context
256K
Released
May 20, 2026
Speed
Ability
Reliability
Supported Parameters

This model supports the following parameters:

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

This model supports the following features:

Structured Outputs Reasoning Tools Response Format
Performance Summary

Grok Build 0.1, xAI's fast coding model, demonstrates moderate speed performance, ranking in the 33rd percentile across benchmarks. Its pricing is positioned at premium levels, falling into the 11th percentile. A standout feature is its exceptional reliability, achieving a 100% success rate across all benchmarks, indicating consistent and usable responses. The model exhibits significant strengths in specific areas. It achieved perfect accuracy in both Hallucinations (100%) and Ethics (100%), notably being the most accurate model at its price point and speed for both. Its Coding performance is strong, scoring 95.0% accuracy (90th percentile), making it highly effective for its intended agentic software engineering workflows. General Knowledge (99.5%) and Reasoning (96.0%) also show robust capabilities. A notable weakness is its Instruction Following, where it achieved 60.0% accuracy, placing it in the 53rd percentile, suggesting room for improvement in handling complex multi-layered instructions. Mathematics (93.0%) and Email Classification (99.0%) demonstrate solid, though not top-tier, performance.

Model Pricing

Current Pricing

Feature Price (per 1M tokens)
Prompt $1
Completion $2
Input Cache Read $0.2
Web Search $5000

Price History

Available Endpoints
Provider Endpoint Name Context Length Pricing (Input) Pricing (Output)
xAI
xAI | x-ai/grok-build-0.1-20260520 256K $1 / 1M tokens $2 / 1M tokens
Benchmark Results
Benchmark Category Reasoning Strategy Free Executions Accuracy Cost Duration
Other Models by x-ai