Model Tracker
Grok Code Fast 1
Grok Code Fast 1 is an AI model made by xAI. xAI released it on 28 August 2025. xAI retired it on 15 May 2026. Through the API it costs $0.
In inglese
Grok Code Fast 1 is an AI model made by xAI. xAI released it on 28 August 2025. xAI retired it on 15 May 2026. Through the API it costs $0.20 per 1M tokens for input and $1.50 per 1M tokens for output.
- Released
- 28 August 2025 — x.ai, read 16 October 2026
- Status
- Not confirmed: two readings disagree: retired and ga
- Takes
- Not confirmed: The maker's pages reviewed do not explicitly specify the model's accepted input modalities.
- Returns
- Not confirmed: The maker's pages reviewed do not explicitly specify the model's output modalities.
- Open weights
- Not confirmed: The maker's pages reviewed do not state whether the model weights are open or downloadable.
- Licence
- Not confirmed: The maker's pages reviewed do not name a licence for the model.
- Context window
- Not confirmed: The maker's pages reviewed do not print a standard context-window figure for this model.
- Longest answer
- Not confirmed: The maker's pages reviewed do not print the model's standard maximum output-token limit.
- Knowledge cutoff
- Not confirmed: The maker's pages reviewed do not state a knowledge-cutoff date for this model.
- API price, input
- $0.20 per 1M tokens — x.ai, read 16 October 2026
- API price, output
- $1.50 per 1M tokens — x.ai, read 16 October 2026
- Where
- API — data.x.ai, read 16 October 2026
- Parameters
- Not confirmed: The maker's pages reviewed do not publish a parameter count for this model.
- Model card
- https://data.x.ai/2025-08-26-grok-code-fast-1-model-card.pdf — x.ai, read 16 October 2026
Benchmarks
Measured by others, not by the maker: each score with the name the measurer gives the model and the setting it ran, its day and its licence.
Arena
- Code Arena (WebDev), Grok Code Fast 1: 1,166 (1,138–1,195, 789 votes), published 18 October 2026
Arena’s leaderboard dataset (lmarena-ai/leaderboard-dataset on Hugging Face), CC BY 4.0: ratings from people’s votes between two anonymous models, as Arena publishes them. Data · CC BY 4.0
Questions
When was Grok Code Fast 1 released?
xAI released Grok Code Fast 1 on 28 August 2025.
How much does the Grok Code Fast 1 API cost?
On the standard tier, Grok Code Fast 1 costs $0.20 per 1M tokens for input and $1.50 per 1M tokens for output, as xAI lists it.
More from xAI
- Grok 3
- Grok 3 (Think)
- Grok 3 mini
- Grok 3 mini (Think)
- Grok 4
- Grok 4 Fast
- Grok 4 Heavy
- Grok 4.1
- Grok 4.1 Fast
- Grok 4.20
- Grok 4.20 Multi-Agent Beta
- Grok 4.3
- Grok 4.5
- Grok 4.6
- Grok 4.7
- Grok Build 0.1
- Grok Imagine Image 2.0
- Grok Imagine Video 1.5
- Grok Voice 1.0
- Grok Voice 2.0
- Grok Voice 3.0
- Grok-1
- Grok-1.5V
- Grok-2
Sources
- Grok Code Fast 1 | SpaceXSI (read 16 October 2026)
- May 15, 2026 Model Retirement | SpaceXSI Docs (read 16 October 2026)
- Grok Code Fast 1 Model Card (read 16 October 2026)