GPT 5.6 Terra (Fast) API
About
Build advanced reasoning agents with GPT 5.6 Terra (Fast), a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $4.00/1M input and $24.00/1M output tokens, native tool calling support. Access GPT 5.6 Terra (Fast) via the Vercel AI Gateway API with up to 128K output tokens.
Capabilities
Input Modalities
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Output Modalities
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Limits
Context Window
1.1M
Tokens
Input Limit
922K
Tokens
Max Output
128K
Tokens
Pricing
Standard (per 1M tokens)
Input
$4.00
Output
$24.00
Caching (per 1M tokens)
Read
$0.40
Write
$5.00
Frequently Asked Questions
GPT 5.6 Terra (Fast) by Vercel AI Gateway costs $4.00 per 1M input tokens and $24.00 per 1M output tokens. Cached reads cost $0.40 per 1M tokens. Cache writes cost $5.00 per 1M tokens.
Model Details
ID
openai/gpt-5.6-terra-fast
Provider
Vercel AI GatewayFamily
gpt-terra
Release Date
Jul 9, 2026
Knowledge Cutoff
Feb 16, 2026
API Integration