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Vercel AI Gateway

GPT-5.1 Instant API

Vercel AI Gateway
About

Integrate multimodal vision capabilities using GPT-5.1 Instant, designed to process both text and images seamlessly. This model delivers cost-effective pricing at $1.25/1M input and $10.00/1M output tokens, native tool calling support. Access GPT-5.1 Instant via the Vercel AI Gateway API with up to 16K output tokens.

Capabilities

Input Modalities

textimagepdf

Output Modalities

text
Reasoning
No
Structured Output
No
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
128K

Tokens

Input Limit
112K

Tokens

Max Output
16K

Tokens

Pricing

Standard (per 1M tokens)

Input
$1.25
Output
$10.00

Caching (per 1M tokens)

Read
$0.13
Frequently Asked Questions

GPT-5.1 Instant by Vercel AI Gateway costs $1.25 per 1M input tokens and $10.00 per 1M output tokens. Cached reads cost $0.13 per 1M tokens.

Model Details
ID
openai/gpt-5.1-instant
Provider
Vercel AI Gateway
Family
gpt
Release Date
Nov 12, 2025
Knowledge Cutoff
Oct 1, 2024
API Integration
NPM Package
@ai-sdk/gateway
Environment Variables
AI_GATEWAY_API_KEY
Documentation