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Arena adds OpenAI GPT-6 Astra to Agent Arena as votes begin, scores pending

September 4, 2026 at 16:26 EDT

Foundation Models
AI Agents

Arena has added OpenAI’s GPT-6 Astra to Agent Arena, inviting users to run the new model on live, long-horizon agent tasks while leaderboard scores are still pending. The listing follows OpenAI’s September 3, 2026 launch of the model, which the company positions as a computer-use and agentic flagship rather than a chat-only upgrade.

Sep 4, 2026 · Arena · OpenAI

GPT-6 Astra enters Agent Arena

OpenAI’s new computer-use flagship is now testable on Arena’s live agent tasks. Community votes will shape the ranking; official Arena scores are still coming.

Computer-use time (OSWorld 2.0 latency sim)

~40 min

GPT-6 Astra

~75 min

GPT-5.6 Sol

About 47% less time per task on OpenAI’s OSWorld 2.0 latency simulation, with a higher score (72.6% vs 65.7%).

72.6%

OSWorld 2.0 (Astra)

92.7%

ScreenSpot-Pro

1.05M

Context tokens

$10 / $50

API per 1M in/out

1
OpenAI ships Astra

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2
Arena lists model

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3
Users vote on tasks

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4
Scores coming soon

What testers like

Hands-on 3D and world-building runs found Astra now competitive with Fable after earlier GPT models trailed. Computer-use speed and UI grounding are the headline gains.

Open questions

Arena leaderboard scores are not out. Independent indexes show a larger gap between general intelligence and agentic scores. Access remains gated, with usage caps and restricted cyber tools.

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