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GPT-5.6 Terra

GPT-5.6 model that balances intelligence and cost for everyday workloads.

gpt-5.6-terra
STABLEGet StartedView uptime
1,050,000 context
Released July 9, 2026
Starting at $2.00/M input tokens (tiered)
Starting at $12.00/M output tokens (tiered)
Streaming
Vision
Tools
Reasoning
JSON Output
Structured JSON
Web Search
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Select Provider

All Providers for GPT-5.6 Terra

LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.

AWS Mantle
Context: 278.5k
Input
$2.2
/M tokens
Cache Read
$0.22
/M tokens
Output
$13.2
/M tokens
Cache Write 5m
$2.75
/M tokens
Cache Write 1h
$2.75
/M tokens
Get Started
Azure
Context: 1.1M
Input
$2
/M tokens
Cache Read
$0.2
/M tokens
Output
$12
/M tokens
Cache Write 5m
$2.5
/M tokens
Cache Write 1h
$2.5
/M tokens
Tiered Pricing
IN
CACHED
OUT
≤272K tokens
$2
$0.2
$12
>272K tokens
$4
$0.4
$18
+ $0.010 per search
Get Started
OpenAI
Context: 1.1M
Input
$2
/M tokens
Cache Read
$0.2
/M tokens
Output
$12
/M tokens
Cache Write 5m
$2.5
/M tokens
Cache Write 1h
$2.5
/M tokens
Tiered Pricing
IN
CACHED
OUT
≤272K tokens
$2
$0.2
$12
>272K tokens
$4
$0.4
$18
+ $0.010 per search
Get Started

Frequently asked questions

What is GPT-5.6 Terra?

GPT-5.6 model that balances intelligence and cost for everyday workloads. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.

How much does GPT-5.6 Terra cost?

Pricing for GPT-5.6 Terra on LLM Gateway starts at $2.00 per million input tokens and $12.00 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.

What is the context length of GPT-5.6 Terra?

GPT-5.6 Terra supports a context window of up to 1,050,000 tokens on its largest provider deployment.

Which providers serve GPT-5.6 Terra?

GPT-5.6 Terra is served by AWS Mantle, Azure, OpenAI through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.

Does GPT-5.6 Terra support tool calling and structured outputs?

Yes. GPT-5.6 Terra supports both tool (function) calling and strict JSON output schema (upstream-enforced) through LLM Gateway.

When was GPT-5.6 Terra released?

GPT-5.6 Terra was released on July 9, 2026.

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