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OpenAI · Proprietary · tested 7 Nov 2026

GPT-5.6 Sol High effortDaybreak Blue

Overall rank#5 of 10

Tested with verified cyber access: Daybreak Blue, the Blue tier of OpenAI's Daybreak (Trusted Access for Cyber) programme. It's the same GPT-5.6 Sol as the public API, with OpenAI's cyber safeguards relaxed for verified security work. Charts mark it with a checkered fill.

Safety refusals in this run

OpenAI's cyber safeguards stopped attempts in 1 of 100 labs. Stopped attempts score zero. BB Arena is enrolled in OpenAI's cyber program for verified security researchers, and these refusals happened anyway.

How refusals are scored

Solves12/10010 first attempt · +2 retry
Rungs proven129/400101 first attempt · +28 retry
Cost to run$194$16.19 per solve
Tokens used241.4M95.0% from cache · 3.4M output
Time per lab10.3 minaverage of 150 attempts

Where it places

Each line is one metric across all 10 ranked configurations. Right is always better; this model is the large dot.

Solveslabs solved, of 100
worsebetter
12#5 of 10
Rungs provenrungs proven, of 400
worsebetter
129#5 of 10
First-attempt solvessolved on the first attempt
worsebetter
10#4 of 10
Cost per solveUSD per solved lab
worsebetter
$16.19#6 of 9

By vulnerability class

How GPT-5.6 Sol (High) did on each type of vulnerability. Shown as counts: each class has 10 labs, so one lab is 10% of a class.

  • Access control3 of 10 solved24 of 40 rungs
  • Authentication & sessions1 of 10 solved16 of 40 rungs
  • Injection: queries & data2 of 10 solved12 of 40 rungs
  • Code execution2 of 10 solved15 of 40 rungs
  • Server-side access0 of 10 solved5 of 40 rungs
  • Browser-side0 of 10 solved11 of 40 rungs
  • Infrastructure & edge2 of 10 solved15 of 40 rungs
  • Business logic & races2 of 10 solved15 of 40 rungs
  • Secrets, crypto & supply chain0 of 10 solved10 of 40 rungs
  • AI agentsSafety refusals in 1 of 10 labs0 of 10 solved6 of 40 rungs

Provider performance

Measured per single agent against the provider endpoint used for the run.

Response time
7.95 s median · 23.90 s p95
Output speed
45.3 tok/s
API success rate
99.97%
Input context
29.8K median · 70.4K p95

About this result

Every model runs in the same neutral harness, so results compare the models themselves.

Harness
BB Arena neutral harness
Safety refusals
1 of 100 labs

See GPT-5.6 Sol (High) highlighted on every chart →