OpenAI

GPT-5.6 Terra

Type
language model
Context
1,050K tokens
Max output
128K
Released
9 July 2026
Knowledge cutoff
February 2026
API string
openai/gpt-5.6-terra

Prices by provider

Provider Input, $ per 1M Output, $ per 1M In our data since
OpenRouter $1 $6 31 Jul 2026
routing-run $1.5 $9 31 Jul 2026
xpersona $1.5 $2 31 Jul 2026
Merge Gateway $1.875 $11.25 31 Jul 2026
Azure Cognitive Services $2 $12 31 Jul 2026
CrossModel $2 $12 1 Aug 2026
LLM Gateway $2 $12 1 Aug 2026
Microsoft Foundry gpt-5.6-terra $2 $12 31 Jul 2026
OpenAI $2 $12 31 Jul 2026
Vercel $2 $12 31 Jul 2026
bedrock_mantle $2.2 $13.2 31 Jul 2026
Amazon Bedrock $2.2 $13.2 31 Jul 2026
vivgrid $2.5 $15 31 Jul 2026
ai-router $2.5 $15 31 Jul 2026
ofox $2.5 $15 31 Jul 2026
AIHubMix $2.5 $15 31 Jul 2026
Abacus.AI $2.5 $15 31 Jul 2026
Cloudflare AI Gateway $2.5 $15 31 Jul 2026
Databricks $2.5 $15 31 Jul 2026
GitHub Copilot $2.5 $15 31 Jul 2026
Microsoft Foundry azure/gpt-5.6-terra $2.5 $15 31 Jul 2026
OpenCode Zen $2.5 $15 31 Jul 2026
ZenMux $2.5 $15 31 Jul 2026
Microsoft Foundry azure/eu/gpt-5.6-terra $2.75 $16.5 31 Jul 2026

Only the base tier and only per-token prices are shown. Batch, discounted and cached rates, as well as prices per image or per second of video, do not go into this table: they cannot stand in the same column as a price per million tokens.

A single provider appears several times if it sells this model under different identifiers and at different prices — for example, at different weight precision. The identifier is shown next to the name. Identical offers that arrived from two sources under different spellings are merged into one row.

The date in the last column is the day this price first entered our collection. The price may well be older: before that day we simply were not recording it. It has not changed since — otherwise a new row with a new date would stand in its place.

Measurement results

Task set Result Run conditions Measured by
Arena Score, web development 1,521.61 1,510–1,533 effort: xhigh
Arena Score, expert questions 1,505.83 1,486–1,525 effort: xhigh
Arena Score in French 1,503.02 1,465–1,542 effort: xhigh
Arena Score, programming 1,488.59 1,476–1,501 effort: xhigh
Arena Score, mathematics 1,472.82 1,444–1,502 effort: xhigh
Arena Score, hard prompts 1,469.31 1,461–1,478 effort: xhigh
Arena Score in Russian 1,461.69 1,442–1,482 effort: xhigh
Arena Score, multi-turn dialogue 1,457.89 1,442–1,474 effort: xhigh
Arena Score, instruction following 1,454.21 1,443–1,465 effort: xhigh
Arena Score, long queries 1,453.98 1,444–1,464 effort: xhigh
Arena Score in Spanish 1,453.31 1,413–1,493 effort: xhigh
Arena Score, overall 1,448.83 1,442–1,456 effort: xhigh
Arena Score in English 1,443.56 1,433–1,454 effort: xhigh
Arena Score, creative writing 1,410.72 1,395–1,426 effort: xhigh
Arena Score, understanding diagrams 1,317.63 1,294–1,342 effort: xhigh
Arena Score, text recognition in images 1,285.54 1,270–1,301 effort: xhigh
Arena Score, working with images 1,276.97 1,263–1,291 effort: xhigh
Mock AIME 2024–2025 — olympiad problems 99.72 % effort: max · with a tuned harness Epoch evaluations
ARC-AGI — generalising to unseen patterns 96.5 % effort: max · with a tuned harness https://arcprize.org/leaderboard
GPQA Diamond — graduate-level questions 91.08 % effort: max · with a tuned harness Epoch evaluations
FrontierMath, levels 1–3 85.97 % effort: max Epoch evaluations
ARC-AGI-2 83.9 % effort: max
WeirdML — unusual machine learning tasks 78.27 % effort: high https://htihle.github.io/weirdml.html
FrontierMath, level 4 — research-grade problems 70.73 % effort: max Epoch evaluations
Chess puzzles 51.6 % effort: max Epoch evaluations
SimpleQA Verified — factual accuracy 43.1 % effort: max Epoch evaluations
FrontierCode — patches fit to be merged into a project 41.3 % https://cognition.com/frontiercode
SimpleBench — trick questions 38.68 % SimpleBench Leaderboard
CritPt — physics problems 30 % effort: max
Arena Score, agent tasks 0.04 0–0 effort: xhigh