GPT-5.6 Terra

Name: GPT-5.6 Terra
Brand: OpenAI
Price: 12.0 USD

previous OpenAI

Verified 2026-10-15 against the pages listed below. Prices are USD per 1M tokens, list rate — no committed-use, enterprise or volume discount.

Input

$2.00

Cached input

$0.2

Cache write

$2.50

Output

$12.00

Context window

1,050,000

Max output

128,000

Weights

closed

Caching

both

long-context tier above 272K input tokens: $4.00/$0.40/$5.00/$18.00, now stated on the model's own page

cached input at 10% of base; implicit mode places the breakpoint for you, explicit-only mode lets you place it, and an entry lives at least 30 minutes after its last write or reuse

Watch out

OpenAI's models page no longer names Terra — its balance pick is now GPT-6 Sol, which is $2 cheaper on output at the same $2.00 input. There is no GPT-6 Terra. Not deprecated; re-run your eval before moving

What we would use it for

The default working model — coding, tools, long context

What this has cost, week by week

Output price at each refresh since 2026-07-30. A vendor change is the provider changing its price. Our correction means this board changed what it prints and the provider's charge did not move — the two are never merged, because publishing the second as the first would be a price rise that never happened.

07-30 $15.00→08-06 $12.00→08-14 $12.00→08-20 $12.00→08-27 $12.00→09-03 $12.00→09-10 $12.00→09-17 $12.00→09-24 $12.00→10-01 $12.00→10-08 $12.00→10-15 $12.00

vendor change2026-08-06 · in, cached_in, out — OpenAI cut Terra by 20%, effective 2026-07-30: $2.50/$0.25/$15.00 to $2.00/$0.20/$12.00.

our correction2026-08-06 · cache_write — As above — the page stated the cache-write rate and the board had carried null.

Where these numbers came from

No number on this page was written that was not read from one of those pages on 2026-10-15. If one is wrong, send us the source URL and it is corrected in the next weekly refresh, with a changelog line saying what was wrong — contact@naderu.com.

Jobs this is one of our picks for

Computer use — Vision and tools driving a real UI (computer-use)

Discussed in Naderu Weekly

Three launches, no price rises — 2026-09-24

The rest of the board

This row sits alongside 69 others on the model board, refreshed every week. The same data as JSON, and the terms for using it, are at /board-data.