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OpenAI

GPT-6.1 Terra Pro

openai/gpt-6.1-terra-pro

Holders first until 2026-11-03

about 0.3¢ a message

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

$1.10 per 1M tokens you send$5.50 per 1M tokens it writesreads 1M tokens at once

Published capabilitiesreads imagestool callingjson schema
Chat with GPT-6.1 Terra ProCall it from codeLock this price

About

GPT-6.1 Terra Pro is the same underlying model as GPT-6.1 Terra, served with reasoning.mode set to pro for higher-quality responses on complex tasks. Cost note: pro mode spends far more...

In OpenAI's words.

Try it here

Whatever it says appears here.

Published facts

What the upstream's catalog says about this world, with its price as billed here.

Context window
1,050,000 tokens
Longest answer
128,000 tokens
Input, per 1M tokens
$1.10upstream $1.00
Output, per 1M tokens
$5.50upstream $5.00
Cached input, per 1M
$0.055upstream $0.05
Cache write, per 1M
$1.375upstream $1.25
Margin
+10%
Reads
text and images
First listed
2026-10-26

Speed and reliability measured on this gateway join these once this world has served requests through Antimatter.

Price and latency history as JSON: GET /api/planet/history?id=openai/gpt-6.1-terra-pro.

Call it

One OpenAI compatible endpoint, this model's id, and an am_live_ key from the dashboard. Or try it in chat first, no key needed.

curl https://useantimatter.com/v1/chat/completions \
  -H "Authorization: Bearer $ANTIMATTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "openai/gpt-6.1-terra-pro", "messages": [{"role": "user", "content": "Hello"}]}'

Everything else is in the docs.

Embed this

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

GPT-6.1 Terra Pro price on Antimatter
<a href="https://useantimatter.com/planet/openai/gpt-6.1-terra-pro"><img src="https://useantimatter.com/api/badge/price?id=openai%2Fgpt-6.1-terra-pro" alt="GPT-6.1 Terra Pro price on Antimatter" height="28"></a>

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