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OpenAI's GPT-6 Astra shows 8.6x longer task horizon, but access is limited

By PulseAugur Editorial · [1 sources] ·

OpenAI's new GPT-6 Astra model demonstrates a significantly longer autonomous task horizon, measuring 30.9 minutes compared to GPT-5.6 Sol's 3.6 minutes, according to the UK AI Safety Institute. This extended capability allows for more complex, unattended tasks, such as completing a game from screenshots in under 19 hours, a feat GPT-5.6 Sol took over 96 hours to achieve. Despite these advancements, access to GPT-6 Astra remains limited, with many users, particularly those relying on Codex with a ChatGPT account, unable to run the model yet. AI

IMPACT Sets new SOTA on autonomous task horizon, potentially enabling longer unattended agentic workflows.

RANK_REASON Frontier-lab model release with system card and independent benchmark. [lever_c_demoted from frontier_release: ic=1 ai=1.0]

Read on dev.to — Claude Code tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

OpenAI's GPT-6 Astra shows 8.6x longer task horizon, but access is limited

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72 / 100
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Significant
Frontier-lab model release with system card and independent benchmark. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
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Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
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model release, product
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High
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Breaking (< 6h)
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COVERAGE [1]

  1. dev.to — Claude Code tag TIER_1 English(EN) · RAXXO Studios ·

    GPT-6 Astra Runs 30.9 Minute Tasks. Codex Cannot Yet

    <ul> <li><p>Codex rejects gpt-6.0-astra on ChatGPT accounts, so most solo devs cannot run it yet</p></li> <li><p>UK AISI measured autonomous task horizon at 30.9 minutes against 3.6 minutes for GPT-5.6 Sol</p></li> <li><p>Artificial Analysis puts cost per task between 0.46 USD at…

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