DeepsecBench: GPT-6 Astra Tops Vercel's Cybersecurity Leaderboard

X postGuillermo RauchNews

According to Vercel CEO Guillermo Rauch, OpenAI's GPT-6 Astra has taken the top spot on Vercel's DeepsecBench. The model completes benchmark evaluations in under 50 minutes, compared to nearly four hours for its predecessor.

Key points

  1. Vercel's DeepsecBench measures how effectively AI models find security vulnerabilities in application code using the Deepsec cyber harness, combining recall and precision.
  2. GPT-6 Astra xhigh ranks first with a score of 37.79 (32.8% recall, 97.9% precision), outperforming GPT-5.6 Sol xhigh (35.44) and Claude Opus 5 max (32.44).
  3. Completing tasks in 49 minutes and 47 seconds, GPT-6 Astra xhigh is significantly faster than GPT-5.6 Sol (roughly 3 hours 39 minutes) and costs $63.70, roughly half the price of Claude Opus 5 max ($127.93).
  4. When asked about testing the Fable model, Rauch noted that it was tested but refused the tasks.

Why it matters

Slashing scan and evaluation times from several hours to under 50 minutes while maintaining high precision and lower costs directly impacts the speed and viability of automated vulnerability discovery.

Analysis

The DeepsecBench findings highlight substantial latency improvements in code security evals. GPT-6 Astra shows a notable leap over GPT-5.6 Sol and Claude Opus 5 in both speed and false-positive management. Meanwhile, Rauch's note regarding Fable demonstrates that model refusals and guardrails remain a practical hurdle when applying certain LLMs to offensive security tasks.

Original post

Guillermo Rauch

@rauchg · 5 September 2026

Astra is now the best cybersecurity model in the world on @vercel DeepsecBench. It pulls off in 49 minutes what took Sol ~4 hours, with a better score, at nearly the same cost. It's more effective and 50% cheaper than Claude Opus 5 max. t.co/14WK4F7Qhs t.co/zRyGqlZYFo

1.1k likes70 replies180 bookmarks81.1k views

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More posts in the thread (1)
  1. @vidigoat2011 @vercel We have. Fable refuses
Selected replies (5)
  • @SlimAssiliX @rauchg @vercel best cybersecurity model at 49 minutes per task, running unsupervised. the timer matters more than the score here
  • @cramforce @oxfrancesco_ @rauchg @vercel Yes
  • @das_sma @rauchg @vercel Goodbye Fable
  • @vidigoat2011 @rauchg @vercel why havent u tested fable
  • @oxfrancesco_ @rauchg @vercel Can I use this with my codex sub by any chance?

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Summary generated by AI (Gemini 3.8 Flash, 27 September 2026). It may contain errors – the original source is authoritative.

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