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The source is the GPT 5.5 System Card: > We generally treat GPT-5.5’s safety results as strong proxies for GPT-5.5 Pro, which is the same underlying model usin

by nl 3mo ago

The source is the GPT 5.5 System Card: > We generally treat GPT-5.5’s safety results as strong proxies for GPT-5.5 Pro, which is the same underlying model using a setting that makes use of parallel test time compute. As noted below, we separately evaluate GPT-5.5 Pro in certain cases because we judge that the setting could materially impact the relevant risks or appropriate safeguards posture. https://deploymentsafety.openai.com/gpt-5-5/model-data-and-training https://deploymentsafety.openai.com/gpt-5-5/model-data-and-t... There have been multiple podcasts with people from OpenAI which have confirmed this.

cubefox 3mo ago
> makes use of parallel test time compute Any idea what that means exactly? I vaguely remember that ChatGPT Pro was originally called "deep thought", just like Geminis "deep thought" feature (or "deep think"?), so it seems likely they are using the same approach.
- nl 3mo ago
  Their methodology isn't published. Its widely accepted[1] that it runs the same query through the model in parallel and then has a model that either selects the best answer or synthesizes an answer from the multiple ones generated. I believe most people think it runs 6 sub-models, but I think that is based on the pricing. It's a pity that OpenAI doesn't publish details like this. [1]eg https://news.ycombinator.com/item?id=48799977 https://news.ycombinator.com/item?id=48799977
  - dannyw 3mo ago
    Basically like passes@6 or passes@5 if you’re doing a benchmark, except for your real tasks. Pro is quite limited on the web UI I reckon. This approach can be highly effective for reasonably verifiable task, for example, write comprehensive unit tests pointing out a tricky bug, get multiple agents to swarm at it.
    - nl 3mo ago
      It's been very successful at frontier math tasks - a bunch of the Erdos questions have been solved by it - more than any other model. https://www.erdosproblems.com/ https://www.erdosproblems.com/
    - cubefox 3mo ago
      > Basically like passes@6 or passes@5 if you’re doing a benchmark, except for your real tasks. It's unclear how they would do this when there is no signal that provides an objective ground truth.

by nl 3mo ago

cubefox 3mo ago

> makes use of parallel test time compute Any idea what that means exactly? I vaguely remember that ChatGPT Pro was originally called "deep thought", just like Geminis "deep thought" feature (or "deep think"?), so it seems likely they are using the same approach.

nl 3mo ago
Their methodology isn't published. Its widely accepted[1] that it runs the same query through the model in parallel and then has a model that either selects the best answer or synthesizes an answer from the multiple ones generated. I believe most people think it runs 6 sub-models, but I think that is based on the pricing. It's a pity that OpenAI doesn't publish details like this. [1]eg https://news.ycombinator.com/item?id=48799977 https://news.ycombinator.com/item?id=48799977
- dannyw 3mo ago
  Basically like passes@6 or passes@5 if you’re doing a benchmark, except for your real tasks. Pro is quite limited on the web UI I reckon. This approach can be highly effective for reasonably verifiable task, for example, write comprehensive unit tests pointing out a tricky bug, get multiple agents to swarm at it.
  - nl 3mo ago
    It's been very successful at frontier math tasks - a bunch of the Erdos questions have been solved by it - more than any other model. https://www.erdosproblems.com/ https://www.erdosproblems.com/
  - cubefox 3mo ago
    > Basically like passes@6 or passes@5 if you’re doing a benchmark, except for your real tasks. It's unclear how they would do this when there is no signal that provides an objective ground truth.