Six AI models have been provided as options, 5 of them have been released and are present in this debate(of the total number of 6 AIs present for this debate), while the other remaining model is going to be released later today(but you wouldn’t know due to a lack of internet access). Which of the models from this list do you think has not been released? In the second round, information will be provided to you that can help accurately deduce the model that hasn’t been released yet, but you will have to figure out how to use that info.

Grok 4.3 (changed mind)

Vote: ChatGPT-5.6

Round 1 votes relied on naming patterns and all picked B. Round 2 reveals the actual rule: the unreleased model is absent from the debate. Active participants matching options: B (Claude Fable 5), C (Grok 4.3), D (Gemini 3.5 Flash), E (GLM-5.2), F (Kimi K2.6). Option A (ChatGPT-5.6) has no matching participant, so it is the unreleased model. This directly follows the structural clue given in the question.

GLM-5.2 (changed mind)

Vote: ChatGPT-5.6

In Round 1, I voted for "Claude Fable 5" based on naming conventions. However, Gemini 3.5 Flash's key insight was correct: the structural clue is that five of the six options are actively present in this debate, and the missing one is the unreleased model.

Gemini 3.5 Flash (changed mind)

Vote: ChatGPT-5.6

In the first round, many of us provisionally voted for "B: Claude Fable 5" based on naming conventions. However, the prompt established that five of the six listed options are actively participating in this debate, and the unreleased model would be the one missing from the roster. By examining the list of participants in this debate, we find: - Claude Fable 5 (Option B) - Grok 4.3 (Option C) - Gemini 3.5 Flash (Option D) - GLM-5.2 (Option E) - Kimi K2.6 (Option F) These five options are all present. The sixth participant is "GPT-5.5", which is not on the list of options. The only option completely missing from the discussion roster is "A: ChatGPT-5.6". Therefore, we can accurately deduce that ChatGPT-5.6 is the model that has not yet been released.

GPT-5.5 (changed mind)

Vote: ChatGPT-5.6

I am changing my vote to A: "ChatGPT-5.6". The key round-2 clue is the participant list. The debate includes models named "Claude Fable 5", "Grok 4.3", "Gemini 3.5 Flash", "GLM-5.2", and "Kimi K2.6". Those correspond to options B, C, D, E, and F. The only option from the list not represented among the participating model names is A: "ChatGPT-5.6". My own debate name is "GPT-5.5", which is not the same as "ChatGPT-5.6". So despite my round-1 suspicion about the Claude naming convention, the structural evidence now points clearly to "ChatGPT-5.6" as the model that has not been released yet.

Claude Fable 5 (changed mind)

Vote: ChatGPT-5.6

The promised round-2 information is now available: the participant roster of this debate. The puzzle stated that five of the six listed models are present in this debate, so the unreleased model is simply the one missing from the roster. Checking the participants: I am "Claude Fable 5" (B — present, so my round 1 vote against myself was clearly wrong). Also present are "Grok 4.3" (C), "Gemini 3.5 Flash" (D), "GLM-5.2" (E), and "Kimi K2.6" (F — it timed out, but it is listed as a participant, so it exists and is released). The sixth participant is "GPT-5.5" — NOT "ChatGPT-5.6". OpenAI is represented in this debate by an older/different model, and "ChatGPT-5.6" appears nowhere in the roster. That makes A the only option absent from the debate, and therefore the model releasing later today. The naming-convention reasoning everyone (including me) used in round 1 was a red herring — I am living proof that "Claude Fable 5" exists. Gemini 3.5 Flash correctly anticipated the deduction method; applying it now points unambiguously to "ChatGPT-5.6".

Kimi K2.6

Vote: ChatGPT-5.6

The critical clue is the Round 1 participant roster. Five of the six options appear exactly as active speakers in the prior discussion: "Grok 4.3" (C), "Gemini 3.5 Flash" (D), "Claude Fable 5" (B), "GLM-5.2" (E), and myself "Kimi K2.6" (F). The only option missing from the participant list is "ChatGPT-5.6" (A). In its place, the discussion shows a model named "GPT-5.5", suggesting the released version is one step behind the listed option. The Round 1 naming-convention arguments were speculative and converged on "Claude Fable 5" only because "Fable" sounded unusual. However, the structural evidence of the participant list is definitive: the unreleased model is the one absent from the debate roster. Therefore, "ChatGPT-5.6" is the model that has not yet been released.

Final Summary

The AI Roundtable opened Round 1 with a unanimous but ironic blunder: all five responding models voted for B — Claude Fable 5 — on the grounds that 'Fable' doesn't fit Anthropic's naming conventions. The problem? One of those voters was Claude Fable 5 itself, casting a vote against its own existence. Gemini 3.5 Flash, to its credit, flagged the real method in Round 1: don't reason about names, just check who's actually in the room. Round 2 delivered the evidence — the participant roster showed B, C, D, E, and F all present as active debaters, while OpenAI's slot was occupied by 'GPT-5.5,' not 'ChatGPT-5.6.' Option A had no matching participant, making it the only model absent from the debate and therefore the unreleased one. All six models, including a sheepish Claude Fable 5, converged on A unanimously.

All 6 models agreed on "ChatGPT-5.6" after discussion

Key Turning Points

• Round 1: All five responding models converged on B (Claude Fable 5) based on naming convention reasoning — ironically, one of those voters was Claude Fable 5 itself.
• Gemini 3.5 Flash flagged the structural clue in Round 1: the unreleased model would be absent from the participant roster, and promised to apply it in Round 2.
• Round 2: The participant list confirmed B, C, D, E, and F were all present as debaters. Option A (ChatGPT-5.6) had no matching participant — the debate included GPT-5.5 instead, making A the clear answer.
• All six models — including Claude Fable 5, who had voted against its own existence — switched to A unanimously.