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gpt-5.6-terra

openai/gpt-5.6-terra

$2.20 in · $13.20 out per 1M tokens1M context

about 0.8¢ a message

A typical message: about 500 tokens you send and 500 it writes.

Chat with gpt-5.6-terra
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Also:batch

Spec sheet

Published facts from the catalog, billed prices and what we measured here. Anything not measured says so.

Price, billed here

Input, per 1M tokens
$2.20provider $2.00
Output, per 1M tokens
$13.20provider $12.00
Cached input, per 1M
$0.22provider $0.20
Cache write, per 1M
$2.75provider $2.50
Margin
+10%

Context and formats

Context window
1,050,000 tokens
Longest answer
not published
Reads
text and images
Makes
text

Measured here, last 7 days

First token, median
not measured
Answered without error
not measured

Tools and JSON

Tool calling
not declared
JSON output
not declared

Price and latency history as JSON: GET /api/planet/history?id=openai/gpt-5.6-terra.

Try it here

The answer appears here.

Measured here

Call it

Use one OpenAI compatible endpoint, this model's id and an am_live_ key from the dashboard. You can also try it in chat first with no key.

curl https://useantimatter.com/v1/chat/completions \
  -H "Authorization: Bearer $ANTIMATTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "openai/gpt-5.6-terra", "messages": [{"role": "user", "content": "Hello"}]}'

Everything else is in the docs.

Embed this

A badge showing this model's live price per million tokens, as billed here, for a README or a site. It links back to this page.

gpt-5.6-terra price on Antimatter
<a href="https://useantimatter.com/planet/openai/gpt-5.6-terra"><img src="https://useantimatter.com/api/badge/price?id=openai%2Fgpt-5.6-terra" alt="gpt-5.6-terra price on Antimatter" height="28"></a>

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