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OpenAI: GPT-5.6 Terra Pro

openai/gpt-5-6-terra-pro

Prices

Input

$2.00 per 1M tokens

medium
Input (>272k ctx)

$4.00 per 1M tokens

medium
Input (cache write, >272k ctx)

$5.00 per 1M tokens

medium
Input (cache write)

$2.50 per 1M tokens

medium
Input (cached read, >272k ctx)

$0.40 per 1M tokens

medium
Input (cached read)

$0.20 per 1M tokens

medium
Output

$12.00 per 1M tokens

medium
Output (>272k ctx)

$18.00 per 1M tokens

medium

Also available on

The same model, sold by someone else. The price above is the maker's own.

4 sales channels for this model.
ChannelWhatPrice
OpenRouter · openaiInput$2.00 per 1M tokens
Input (cache write)$2.50 per 1M tokens
Input (cached read)$0.20 per 1M tokens
Output$12.00 per 1M tokens
Query$0.01 per query
Other · kiloInput$2.00 per 1M tokens
Input (cache write)$2.50 per 1M tokens
Input (cached read)$0.20 per 1M tokens
Output$12.00 per 1M tokens
Other · nano-gptInput$2.00 per 1M tokens
Input (cache write)$2.50 per 1M tokens
Input (cached read)$0.20 per 1M tokens
Output$12.00 per 1M tokens
Other · openrouterInput$2.00 per 1M tokens
Input (>272k ctx)$4.00 per 1M tokens
Input (cache write, >272k ctx)$5.00 per 1M tokens
Input (cache write)$2.50 per 1M tokens
Input (cached read, >272k ctx)$0.40 per 1M tokens
Input (cached read)$0.20 per 1M tokens
Output$12.00 per 1M tokens
Output (>272k ctx)$18.00 per 1M tokens

Specifications

Provider
openai
Context window
1,050,000
Max output tokens
128,000
Open weights
no
Released
07/09/2026
Retires
no date announced
First seen by this tracker

Price history

No price of this model has changed since we started tracking it.

Input
2 per 1M tokens, unchanged since 09/14/2026
Output
12 per 1M tokens, unchanged since 09/14/2026
Input (cached read)
0.2 per 1M tokens, unchanged since 09/14/2026
Input (cache write)
2.5 per 1M tokens, unchanged since 09/14/2026
Input (>272k ctx)
4 per 1M tokens, unchanged since 09/14/2026
Output (>272k ctx)
18 per 1M tokens, unchanged since 09/14/2026
Input (cached read, >272k ctx)
0.4 per 1M tokens, unchanged since 09/14/2026
Input (cache write, >272k ctx)
5 per 1M tokens, unchanged since 09/17/2026

Last updated 10/02/2026, 02:10