GPT-4.1 (Fast) API
About
Integrate multimodal vision capabilities using GPT-4.1 (Fast), designed to process both text and images seamlessly. This model delivers cost-effective pricing at $3.50/1M input and $14.00/1M output tokens, native tool calling support. Access GPT-4.1 (Fast) via the Vercel AI Gateway API with up to 33K output tokens.
Capabilities
Input Modalities
textimagepdf
Output Modalities
text
Reasoning
No
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
33K
Tokens
Pricing
Standard (per 1M tokens)
Input
$3.50
Output
$14.00
Caching (per 1M tokens)
Read
$0.88
Frequently Asked Questions
GPT-4.1 (Fast) by Vercel AI Gateway costs $3.50 per 1M input tokens and $14.00 per 1M output tokens. Cached reads cost $0.88 per 1M tokens.
Model Details
ID
openai/gpt-4.1-fast
Provider
Vercel AI GatewayFamily
gpt
Release Date
Apr 14, 2025
Knowledge Cutoff
Apr 1, 2024
API Integration