xAI: Grok Code Fast 1

xAI: Grok Code Fast 1

x-ai · Released Aug 26, 2025
60
Our Score

Grok Code Fast 1 is a speedy and economical reasoning model that excels at agentic coding. With reasoning traces visible in the response, developers can steer Grok Code for high-quality work flows.

$0.20 / 1M Input Price
$1.50 / 1M Output Price
256,000 tokens Context Window
10,000 tokens Max Output

Capabilities

Tool Use Function Calling

Architecture

ModalityText → Text
TokenizerGrok

Performance Indices

Source: Artificial Analysis

28.7 Intelligence Index
23.7 Coding Index
46.6 Agentic Index
43.3 Math Index

Benchmark Scores

Evaluations

GPQA Diamond 72.7%
Graduate-level scientific reasoning
HLE 7.5%
Humanity's Last Exam
MMLU Pro 79.3%
Multi-task language understanding
LiveCodeBench 65.7%
Live coding evaluation
SciCode 36.2%
Scientific computing
AIME 2025 43.3%
Competition mathematics (2025)
IFBench 41.4%
Instruction following
LCR 48.3%
Long-context reasoning
TerminalBench Hard 17.4%
Agentic terminal tasks
τ²-Bench 75.7%
Conversational agent benchmark

Benchmark data from Artificial Analysis and Hugging Face

Model Information

OpenRouter ID x-ai/grok-code-fast-1
Providerx-ai
Release Date August 26, 2025
Context Length256,000 tokens
Max Completion10,000 tokens
Status Active

Pricing

Token Type Cost per 1M tokens Cost per 1K tokens
Input $0.20 $0.000200
Output $1.50 $0.001500

Live Performance

Live endpoint metrics — refreshed every 30 minutes.

100%
Avg Uptime
3,602ms
Best Latency (TTFT)
126 tok/s
Best Throughput
1/1
Active Endpoints
Available via: xAI

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