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GPT 5.6 Terra (Fast)

GPT-5.6 Terra is a balanced GPT-5.6 model for everyday work, with performance comparable to the previous generation at half the cost. Your use is subject to OpenAI's Terms & Privacy Policies.

ReasoningWeb SearchFile InputTool UseVision (Image)Implicit CachingWebsockets
Use with AI GatewayView docs
import { streamText } from 'ai'


const result = streamText({
  model: 'openai/gpt-5.6-terra-fast',
  prompt: 'Why is the sky blue?'
})
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OverviewAPIProvidersThroughputLatencyUptimeStatusSimilar

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Route requests across multiple providers. Copy a provider slug to set your preference. Visit the docs for more info. Using a provider means you agree to their terms, listed under Legal.

Provider
Context
Max Output
Latency
Throughput
Input
Output
Cache
Web Search
Capabilities
ZDR
No Training
Regional Inference
Release Date
OpenAI
Legal:Terms•Privacy
1.1M128K
1.4s
75tps
$4/M+1 more
$24/M+1 more
Read:$0.4/M+2 more
Write:$3.13/M$2.5/M+2 more
$10/K
+ input costs
+4
US
07/09/2026