Rank of 27084from #4
Known for
Long, multi-step computer and browser work, and coding in Codex, where OpenAI's tooling is already in place.
OpenAI's new flagship, out on 3 September 2026 and built for computer use, long agent runs and professional work. The first model to clear ARC-AGI-3 and FrontierMath Tier 4 outright. Its exploit-writing side is held back behind a separate programme.
What it does9
- 1.05M-token context, 128K output
- Five reasoning effort levels, low to max
- Web search, file search, code interpreter, hosted shell and computer use tools
- Keeps notes across context windows in Codex
- Fast mode at twice the speed and twice the price
- Knowledge cutoff April 2026
- $10 / $50 per million tokens, batch and flex at half
- Also on Microsoft Azure and AWS Bedrock
- Text and image in, text out
From GPT-6 Astra’s own site. Not used for ranking.
68index score · LLMs
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