Google’s Gemini 3.5 Pro remains stalled in limited Vertex AI preview and internal testing after a May 2026 I/O tease, with repeated rollout delays past June targets. This slippage, paired with anonymous LMSYS/Arena appearances under older Gemini 3.1 Pro labels, has concentrated trader attention on imminent leaderboard visibility as the key catalyst. Recent Gemini 3.7 Flash releases have strengthened Google’s coding and agentic rankings on Arena, yet the Pro flagship continues to lag behind Claude Opus 5 and GPT-5.6 variants at the top of Elo tables. Competitive pressure and senior researcher departures to Anthropic heighten execution risks, while any confirmed Pro checkpoint or public API expansion could quickly shift implied probabilities ahead of year-end resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$110,193 Vol.
1480+
83%
1490+
71%
1500+
39%
1495+
63%
1510+
16%
$110,193 Vol.
1480+
83%
1490+
71%
1500+
39%
1495+
63%
1510+
16%
Any Gemini model newly added to the leaderboard and labeled as "Pro" may qualify (e.g., gemini-2.5-pro, gemini-3-pro, or gemini-3.1-pro-preview). Gemini models labeled only as Flash, Flash-Lite, or another non-Pro variant will not qualify.
Results from the "Score" column under the "Text Arena | Overall" Leaderboard tab at https://lmarena.ai/leaderboard/text with style control off will be used to resolve this market. This market will resolve solely based on the specified score in the Score column of the leaderboard, regardless of any underlying granular or unrounded data presented elsewhere.
If multiple models are added to the leaderboard on the same calendar date (ET), the highest-scoring model will be used for resolution. Models added to the leaderboard on the calendar date following the initial qualifying model’s first appearance will not be considered.
A qualifying model must be newly added to the Arena.AI Leaderboard. Whether the model was previously released, publicly accessible, in beta, or otherwise available before appearing on the leaderboard is irrelevant for this market.
The resolution source for this market is the Chatbot Arena LLM Leaderboard found at arena.ai/leaderboard/text. If this resolution source is unavailable at 12:00 PM ET on the calendar date following the date on which the qualifying model first appears on the leaderboard, this market will resolve based on the first subsequent instance at which such a score becomes available on the leaderboard. If it remains unavailable through the end of the seventh day after the qualifying model first appears on the leaderboard or if no qualifying model release occurs by December 31, 2026, 11:59 PM ET, this market will resolve to "No".
Market Opened: May 18, 2026, 3:24 PM ET
Resolver
0x65070BE91...Any Gemini model newly added to the leaderboard and labeled as "Pro" may qualify (e.g., gemini-2.5-pro, gemini-3-pro, or gemini-3.1-pro-preview). Gemini models labeled only as Flash, Flash-Lite, or another non-Pro variant will not qualify.
Results from the "Score" column under the "Text Arena | Overall" Leaderboard tab at https://lmarena.ai/leaderboard/text with style control off will be used to resolve this market. This market will resolve solely based on the specified score in the Score column of the leaderboard, regardless of any underlying granular or unrounded data presented elsewhere.
If multiple models are added to the leaderboard on the same calendar date (ET), the highest-scoring model will be used for resolution. Models added to the leaderboard on the calendar date following the initial qualifying model’s first appearance will not be considered.
A qualifying model must be newly added to the Arena.AI Leaderboard. Whether the model was previously released, publicly accessible, in beta, or otherwise available before appearing on the leaderboard is irrelevant for this market.
The resolution source for this market is the Chatbot Arena LLM Leaderboard found at arena.ai/leaderboard/text. If this resolution source is unavailable at 12:00 PM ET on the calendar date following the date on which the qualifying model first appears on the leaderboard, this market will resolve based on the first subsequent instance at which such a score becomes available on the leaderboard. If it remains unavailable through the end of the seventh day after the qualifying model first appears on the leaderboard or if no qualifying model release occurs by December 31, 2026, 11:59 PM ET, this market will resolve to "No".
Resolver
0x65070BE91...Google’s Gemini 3.5 Pro remains stalled in limited Vertex AI preview and internal testing after a May 2026 I/O tease, with repeated rollout delays past June targets. This slippage, paired with anonymous LMSYS/Arena appearances under older Gemini 3.1 Pro labels, has concentrated trader attention on imminent leaderboard visibility as the key catalyst. Recent Gemini 3.7 Flash releases have strengthened Google’s coding and agentic rankings on Arena, yet the Pro flagship continues to lag behind Claude Opus 5 and GPT-5.6 variants at the top of Elo tables. Competitive pressure and senior researcher departures to Anthropic heighten execution risks, while any confirmed Pro checkpoint or public API expansion could quickly shift implied probabilities ahead of year-end resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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