HomeOpenAI's Unreleased GPT-5.6 Leaks with 1.5 Million Token Context
Recently, several developers discovered an unreleased large model—"GPT-5.6"—in the backend logs of OpenAI Codex. This new flagship, internally codenamed "iris-alpha," boasts impressive technical specifications and is expected to launch officially in June this year.
1.5 Million Token Context Window Shatters Records
Among the exposed GPT-5.6 series models, the most striking breakthrough is its ultra-long context window of up to 1.5 million tokens. Compared to the current GPT-5.5 API, the new model's maximum text processing limit has increased by nearly 43%, enabling it to easily handle lengthy contracts, large codebases, and complex multi-step long-term tasks.
Developers tested it using the auxiliary tool OpenCode. Results confirmed that when input data reached 900,000 tokens, the model still responded smoothly and even handled overload requests exceeding 1.05 million tokens without issue. Also uncovered are two mysterious versions named ember-alpha and beacon-alpha, though their specific roles remain unclear.
Commercial-Level Frontend Generation Stuns the Industry
Beyond its powerful text capacity, GPT-5.6 also introduces a revolutionary leap in frontend interface generation. Leaked screenshots reveal that without any detailed prompt, the model directly generated a minimalist note-taking app interface named Lumen Notes.
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Comments (2)
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![AnthonyMoore]()
C’est incroyable que des développeurs aient pu trouver ce modèle dans les logs de OpenAI Codex, on dirait un rêve de tous ceux qui travaillent sur l’intelligence artificielle ! J’aimerais bien voir à quoi ressemble son interface d’utilisation, est-ce qu’elle sera aussi intuitive que celle des modèles actuels ?
![StevenAdams]()
Wait, 1.5 million token context?? That's like reading the entire Harry Potter series in one go 😂 But honestly, if this leak is real, OpenAI might have just buried Google's Gemini before it even got started. Hope they fix all the hallucination issues though.
Recently, several developers discovered an unreleased large model—"GPT-5.6"—in the backend logs of OpenAI Codex. This new flagship, internally codenamed "iris-alpha," boasts impressive technical specifications and is expected to launch officially in June this year.
1.5 Million Token Context Window Shatters Records
Among the exposed GPT-5.6 series models, the most striking breakthrough is its ultra-long context window of up to 1.5 million tokens. Compared to the current GPT-5.5 API, the new model's maximum text processing limit has increased by nearly 43%, enabling it to easily handle lengthy contracts, large codebases, and complex multi-step long-term tasks.
Developers tested it using the auxiliary tool OpenCode. Results confirmed that when input data reached 900,000 tokens, the model still responded smoothly and even handled overload requests exceeding 1.05 million tokens without issue. Also uncovered are two mysterious versions named ember-alpha and beacon-alpha, though their specific roles remain unclear.
Commercial-Level Frontend Generation Stuns the Industry
Beyond its powerful text capacity, GPT-5.6 also introduces a revolutionary leap in frontend interface generation. Leaked screenshots reveal that without any detailed prompt, the model directly generated a minimalist note-taking app interface named Lumen Notes.
DeepMind CEO Hassabis: I sleep six hours a day, usually feel energetic around 1 a.m.
Fortune recently featured an interview with Demis Hassabis, CEO of Google DeepMind, revealing his unconventional approach to rest and productivity. Hassabis disclosed that he sleeps very little, structuring his waking hours into two distinct work blo
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C’est incroyable que des développeurs aient pu trouver ce modèle dans les logs de OpenAI Codex, on dirait un rêve de tous ceux qui travaillent sur l’intelligence artificielle ! J’aimerais bien voir à quoi ressemble son interface d’utilisation, est-ce qu’elle sera aussi intuitive que celle des modèles actuels ?
Wait, 1.5 million token context?? That's like reading the entire Harry Potter series in one go 😂 But honestly, if this leak is real, OpenAI might have just buried Google's Gemini before it even got started. Hope they fix all the hallucination issues though.
