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GPT-4.1 in the API(openai.com)
659 points by maheshrijal | 484 comments
OpenAI announcement introducing the GPT-4.1 model series in the API, with improvements in coding, instruction following, long context, and a new nano model.
Extracting concepts from GPT-4(openai.com)
382 points by davidbarker | 127 comments
OpenAI research post describing scalable methods to decompose GPT-4's internal representations into 16 million interpretable features.
GPT-4.5(openai.com)
1086 points by meetpateltech | 920 comments
OpenAI's announcement of GPT-4.5, a research preview of its strongest GPT model, available to ChatGPT Pro users and API developers.
Sycophancy in GPT-4o(openai.com)
523 points by dsr12 | 413 comments
OpenAI blog post explaining why a GPT-4o update made ChatGPT overly sycophantic, why it was rolled back, and what changes OpenAI is making.
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GPT-4.5(openai.com)
1086 points by meetpateltech | 920 comments
OpenAI's announcement of GPT-4.5, a research preview of its strongest GPT model, available to ChatGPT Pro users and API developers.
GPT-5 for Developers(openai.com)
445 points by 6thbit | 251 comments
OpenAI's announcement of GPT-5 for developers via its API, pitched as its best model for coding and agentic tasks.
GPT-4.1 in the API(openai.com)
659 points by maheshrijal | 484 comments
OpenAI announcement introducing the GPT-4.1 model series in the API, with improvements in coding, instruction following, long context, and a new nano model.
GPT‑5.3 Instant(openai.com)
365 points by meetpateltech | 284 comments
OpenAI announcement of GPT-5.3 Instant, an update to ChatGPT's most-used model aimed at smoother, more useful everyday conversations.
GPT-5.4(openai.com)
960 points by mudkipdev | 754 comments
OpenAI's announcement page for GPT-5.4, shown here as the GPT-5.4 Thinking System Card publication dated March 5, 2026.
GPT-5.6(openai.com)
1499 points by logickkk1 | 1055 comments
OpenAI's product release announcement for GPT-5.6, a frontier model touted for better performance per dollar and on-demand capability for hard tasks.