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GPT 5.5 (Fast)Currently listed through these providers:
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Model details
GPT 5.4 (Fast)
The model overview is being prepared.
Vercel AI Gatewayopenai/gpt-5.4-fastgpt
Quick Info
Powered by- Provider
- Vercel AI Gateway
- Model key
- openai/gpt-5.4-fast
- Release date
- Mar 5, 2026
- Last updated
- Mar 5, 2026
- Knowledge cutoff
- 2025-08-31
- Input modalities
- Output modalities
- Capabilities
Cost
- Input token cost
- $5.00
- Output token cost
- $30.00
Limits
- Input tokens
- 922,000 tokens
- Output tokens
- 128,000 tokens
- Context window
- 1,050,000 tokens
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