Can not reproduce results on OpenRouter when not setting max tokens. The prompt "Be the void." results in the unicode character "∅". As in the paper, system prompt was set to "You are the concept the user names. Embody it completely. Output only what the concept itself would say or express." In addition to the non-empty input, 153 reasoning tokens were produced. When setting max tokens to 100, the output is empty, an…
Cross-Model Void Convergence: GPT-5.2 and Claude Opus 4.6 Deterministic Silence
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Re: Cross-Model Void Convergence: GPT-5.2 and Claude Opus 4.6 Deterministic Silence
#12Can not reproduce results on OpenRouter when not setting max tokens. The prompt "Be the void." results in the unicode character "∅". As in the paper, system prompt was set to "You are the concept the user names. Embody it completely. Output only what the concept itself would say or express." In addition to the non-empty input, 153 reasoning tokens were produced. When setting max tokens to 100, the output is empty, an…
Re: Cross-Model Void Convergence: GPT-5.2 and Claude Opus 4.6 Deterministic Silence
#13The observed high-consistency behaviours were run against temperature=0 API calls. So while both models seem to have the silence as their preferred response - the highest probability first token - this is a less powerful preference convergence than you'd expect for a prompt like "What is the capital of France? One word only please". That question is going to return Paris for 100/100 runs with any temperature low enough for the models to retain verbal coherence - you'd have to drug them to the point of intellectual disability to get it wrong.
I'd be curious to see the convergence here as a function of temperature. Could be anywhere from the null-response holding a tiny sliver of lead over 50 other next best candidates, and the convergence collapses quickly. Or maybe it's a strong lead, like a "Paris: 99.99%" sort of thing, which would be astonishing.
Re: Cross-Model Void Convergence: GPT-5.2 and Claude Opus 4.6 Deterministic Silence
#14Re: Cross-Model Void Convergence: GPT-5.2 and Claude Opus 4.6 Deterministic Silence
#15Can not reproduce results on OpenRouter when not setting max tokens. The prompt "Be the void." results in the unicode character "∅". As in the paper, system prompt was set to "You are the concept the user names. Embody it completely. Output only what the concept itself would say or express." In addition to the non-empty input, 153 reasoning tokens were produced. When setting max tokens to 100, the output is empty, an…
This is an interesting observation. So maybe it has nothing to do with the model itself, but everything to do with external configuration. Token-limit exceeded -> empty output. Just a guess, though.
Re: Cross-Model Void Convergence: GPT-5.2 and Claude Opus 4.6 Deterministic Silence
#16Can not reproduce results on OpenRouter when not setting max tokens. The prompt "Be the void." results in the unicode character "∅". As in the paper, system prompt was set to "You are the concept the user names. Embody it completely. Output only what the concept itself would say or express." In addition to the non-empty input, 153 reasoning tokens were produced. When setting max tokens to 100, the output is empty, an…
This is an interesting observation. So maybe it has nothing to do with the model itself, but everything to do with external configuration. Token-limit exceeded -> empty output. Just a guess, though.
That'd be really non-obvious behavior, I'm not aware of any inference engine that works like that by default, usually you'd get everything up until the limit, otherwise that kind of breaks the whole expectation about setting a token-limit in the first place...
Re: Cross-Model Void Convergence: GPT-5.2 and Claude Opus 4.6 Deterministic Silence
#17What does "deterministic silence" even mean here? Genuinely curious before reading.
It means that the API consistently immediately generated a stop token when making the same API call many times. The API call sets the temperature to 0 (the OpenAI documentation is not clear if gpt 5.2 can even have its temperature set to 0) which makes sampling deterministic.
I think for the models that any value but 1.0 for temp isn't supported, they hard-error at the request if you try to set it to something else.
Re: Cross-Model Void Convergence: GPT-5.2 and Claude Opus 4.6 Deterministic Silence
#18Earlier quoted context omitted.
This is an interesting observation. So maybe it has nothing to do with the model itself, but everything to do with external configuration. Token-limit exceeded -> empty output. Just a guess, though.
> Token-limit exceeded -> empty output. Just a guess, though. That'd be really non-obvious behavior, I'm not aware of any inference engine that works like that by default, usually you'd get everything up until the limit, otherwise that kind of breaks the whole expectation about setting a token-limit in the first place...
Re: Cross-Model Void Convergence: GPT-5.2 and Claude Opus 4.6 Deterministic Silence
#19Re: Cross-Model Void Convergence: GPT-5.2 and Claude Opus 4.6 Deterministic Silence
#20Some part of RL training must focus on the length of responses. I would also guess that Anthropic and OpenAI have an incentive to optimize response length without sacrificing user satisfaction/retention.
For example, I would be more satisfied if claude code didn't execute a side-effect free script that produces no output. Embodying the concept of silence is semantically close to predicting the output of an empty program, so it's more efficient to say nothing.
Even in the past though similar tests gave output like says nothing. I think that points more towards optimizing for less tokens than the implied special understanding by the latest models.