Recent leaks indicate Google is stealth-testing a high-capability Gemini 4 Pro checkpoint on the LMSYS Chatbot Arena under the gemini-3.8-flash label, with community reports of strong performance in coding, reasoning, and agentic tasks that reportedly exceeds GPT-6 Astra and Claude Fable variants. These September 17–21 sightings, including claims of a 10-million-token context window and superior multi-turn outputs, have fueled trader focus on an imminent official Pro-tier debut likely scoring well above 1480 Elo. Google has not confirmed the testing or timeline, though historical patterns suggest public Arena visibility often precedes formal releases, with October 2026 eyed as a possible window amid competitive pressure from Anthropic and OpenAI leaders. Delays seen with prior Gemini 3.5 Pro previews add uncertainty around exact timing and final capabilities.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$187,455 Vol.
Jan 1, 2027
1480+
94%
1490+
91%
1495+
73%
1500+
60%
1510+
37%
$187,455 Vol.
1480+
$29,457 Vol.
94%
1490+
$44,588 Vol.
91%
1495+
$35,016 Vol.
73%
1500+
$34,275 Vol.
60%
1510+
$44,119 Vol.
37%
This market will resolve to "Yes" if the next Google Gemini Pro model added to the Arena.AI Leaderboard (arena.ai/leaderboard/text) has at least the specified score at 12:00 PM ET on the calendar date following the date on which it first appears on the leaderboard. Otherwise, this market will resolve to "No".
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".Recent leaks indicate Google is stealth-testing a high-capability Gemini 4 Pro checkpoint on the LMSYS Chatbot Arena under the gemini-3.8-flash label, with community reports of strong performance in coding, reasoning, and agentic tasks that reportedly exceeds GPT-6 Astra and Claude Fable variants. These September 17–21 sightings, including claims of a 10-million-token context window and superior multi-turn outputs, have fueled trader focus on an imminent official Pro-tier debut likely scoring well above 1480 Elo. Google has not confirmed the testing or timeline, though historical patterns suggest public Arena visibility often precedes formal releases, with October 2026 eyed as a possible window amid competitive pressure from Anthropic and OpenAI leaders. Delays seen with prior Gemini 3.5 Pro previews add uncertainty around exact timing and final capabilities.
This market will resolve to "Yes" if the next Google Gemini Pro model added to the Arena.AI Leaderboard (arena.ai/leaderboard/text) has at least the specified score at 12:00 PM ET on the calendar date following the date on which it first appears on the leaderboard. Otherwise, this market will resolve to "No".
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".
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
Volume
$187,455End Date
Jan 1, 2027Market Opened
May 18, 2026, 3:24 PM ETResolver
0x65070be91...This market will resolve to "Yes" if the next Google Gemini Pro model added to the Arena.AI Leaderboard (arena.ai/leaderboard/text) has at least the specified score at 12:00 PM ET on the calendar date following the date on which it first appears on the leaderboard. Otherwise, this market will resolve to "No".
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".Recent leaks indicate Google is stealth-testing a high-capability Gemini 4 Pro checkpoint on the LMSYS Chatbot Arena under the gemini-3.8-flash label, with community reports of strong performance in coding, reasoning, and agentic tasks that reportedly exceeds GPT-6 Astra and Claude Fable variants. These September 17–21 sightings, including claims of a 10-million-token context window and superior multi-turn outputs, have fueled trader focus on an imminent official Pro-tier debut likely scoring well above 1480 Elo. Google has not confirmed the testing or timeline, though historical patterns suggest public Arena visibility often precedes formal releases, with October 2026 eyed as a possible window amid competitive pressure from Anthropic and OpenAI leaders. Delays seen with prior Gemini 3.5 Pro previews add uncertainty around exact timing and final capabilities.
This market will resolve to "Yes" if the next Google Gemini Pro model added to the Arena.AI Leaderboard (arena.ai/leaderboard/text) has at least the specified score at 12:00 PM ET on the calendar date following the date on which it first appears on the leaderboard. Otherwise, this market will resolve to "No".
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".
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".
Volume
$187,455End Date
Jan 1, 2027Market Opened
May 18, 2026, 3:24 PM ETResolver
0x65070be91...Recent leaks indicate Google is stealth-testing a high-capability Gemini 4 Pro checkpoint on the LMSYS Chatbot Arena under the gemini-3.8-flash label, with community reports of strong performance in coding, reasoning, and agentic tasks that reportedly exceeds GPT-6 Astra and Claude Fable variants. These September 17–21 sightings, including claims of a 10-million-token context window and superior multi-turn outputs, have fueled trader focus on an imminent official Pro-tier debut likely scoring well above 1480 Elo. Google has not confirmed the testing or timeline, though historical patterns suggest public Arena visibility often precedes formal releases, with October 2026 eyed as a possible window amid competitive pressure from Anthropic and OpenAI leaders. Delays seen with prior Gemini 3.5 Pro previews add uncertainty around exact timing and final capabilities.
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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Frequently Asked Questions