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GPT 5.5 (Fast)Currently listed through these providers:
$10 off the fastest Kimi K3 and GLM 5.2 from Synthetic
Model details
GPT-5 (Fast)
The model overview is being prepared.
Vercel AI Gatewayopenai/gpt-5-fastgpt
Quick Info
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- Vercel AI Gateway
- Model key
- openai/gpt-5-fast
- Release date
- Aug 7, 2025
- Last updated
- Aug 7, 2025
- Knowledge cutoff
- 2024-09-30
- Input modalities
- Output modalities
- Capabilities
Cost
- Input token cost
- $2.50
- Output token cost
- $20.00
Limits
- Input tokens
- 272,000 tokens
- Output tokens
- 128,000 tokens
- Context window
- 400,000 tokens