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Modelreleased on 3 September 2026

GPT-6 Astra

OpenAI · GPT Astra family
2ndout of 71General intelligence, ECI index 169.2 (166.2 to 172.5)
Agent tasks13th out of 5264.7% completed
Coding tasksnot measuredCursorBench
Electricity use of a task170 to 290 What the most demanding setting, estimate

Lineage

Company
OpenAI
Family
GPT-6 Astra
Assistants that offer it
ChatGPTpaid plan, Plus, Pro (official page ↗)Perplexitypaid plan, Max (official page ↗)
API price
10 $ per million tokens read, 50 $ written (developers.openai.com/api/docs/pricing, read on 5 November 2026)

Links read on 10/11/2026 on company pages, the press as a fallback; a link given for a family applies only to its latest version.

Rank in each benchmark

  • General intelligenceEpoch AI, ECI index169.2166.2 to 172.52nd out of 71
  • User preferenceLMArena, Elo score147428th out of 68
  • Agent tasksEpoch AI, APEX-Agents64.7 %53.7 to 75.713th out of 52
  • Code repairEpoch AI, DeepSWE74.1 %1st out of 26
  • Coding tasksEpoch AI, CursorBenchnot measured

Each segment of the bar is worth a tenth of the ranking; the 1st groups the best ranked. Rank among models released in 2026 and measured by the benchmark. Sources: Epoch AI, "Capabilities & benchmarking" (CC BY 4.0); LMArena, text with style control (CC BY 4.0); data as of 10 November 2026.

Effort settings

SettingElectricity use of a taskTasks completedTokens per task
DeepSWE, code repair
low29 to 50 Wh67.0 %10,580
medium56 to 96 Wh72.8 %20,362
high73 to 130 Wh73.2 %26,506
xhigh82 to 140 Wh74.1 %29,557
max170 to 290 Wh73.2 %61,149
Estimation methodology

The effort setting says how much the model reasons before answering: the higher it is, the more tokens it writes, and the more electricity the task needs. Tokens per task are measured by Epoch AI.

Electricity: Projet Celsius estimate. Tokens of the task × electricity ofwriting 1,000 tokens for the size of the model (AI Impact Database, IA-0011), × the data centre overhead (PUE). The scope covers computing on the servers and cooling; it does not cover chip manufacturing, training, the network or the device. CursorBench counts tokens read and written together: the range runs from "all read" to "all written". DeepSWE counts tokens written: the range starts from writing alone.

Assumed model size: large class, deduced from the output price (developers.openai.com/api/docs/pricing), assumption. If the model were medium-sized, the estimate would be 4 times lower. Benchmark: a quick question to an assistant needs about 0.3 Wh.

GPT-6 Astra among OpenAI's models, general intelligence

Epoch AI ECI index and its 95% interval, by release date; 14 OpenAI models released in 2026 and measured by the ECI index

MarMayJulSepNov150160170General intelligence index (ECI)GPT-6 AstraGPT-6.1 TerraGPT-6.1 SolGPT-6 SolGPT-5.6 SolGPT-5.5 ProGPT-5.6 TerraGPT-5.4 ProGPT-5.5

Dot: the index measured, at the release dateLine: the 95% intervalGPT-6 Astra5 names in the "Table" tab

Source: Epoch AI, "Capabilities & benchmarking", ECI index. CC BY 4.0 licence.

AI Impact, by Projet Celsius

On a coding task, GPT-6 Astra needs 170 to 290 Wh at its most demanding setting, as much as about 570 to 970 quick questions to an assistant (about 0.3 Wh each).

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