References 690% CONFIDENCEOverall confidence: 90%How well the pin's source and references back up its dates.Weighted average of how firmly 6 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

• [1]90%
  openai.com/index/introducing-gpt-5-for-developers

  openai.com· Posted Oct 12, 2026· Starts Aug 7, 2025 ✓· 23% of score

  OpenAI's^[2][3][4][5] developer post is dated August 7, 2025 and says "Today, we're releasing GPT-5 in our API platform" in three sizes, gpt-5, gpt-5-mini and gpt-5-nano; the API changelog lists "August 7, 2025: Released GPT-5 family of models in the API" and both model pages list a gpt-5-mini-2025-08-07 and gpt-5-nano-2025-08-07 snapshot.

• [2]90%
  GPT-5 mini Model - OpenAI API

  developers.openai.com· Added Oct 12, 2026· 23% of score

  Model page: gpt-5-mini, 400,000-token context with 272,000 max input and 128,000 max output, a 31 May 2024 knowledge cutoff, text and image input, $0.25 input, $0.025 cached and $2 output per 1 million tokens, snapshot gpt-5-mini-2025-08-07; the docs now point new cost-sensitive projects to GPT-5.6 Terra.^[1]

• [3]90%
  GPT-5 nano Model - OpenAI API

  developers.openai.com· Added Oct 12, 2026· 23% of score

  Model page: gpt-5-nano, the fastest and lowest-cost GPT-5 variant for summarization and classification, 400,000-token context, a 31 May 2024 knowledge cutoff, $0.05 input, $0.005 cached and $0.40 output per 1 million tokens, snapshot gpt-5-nano-2025-08-07; the docs now recommend GPT-5.6 Luna for most new work.^[1]

• [4]90%
  Changelog - OpenAI API

  developers.openai.com· Added Oct 12, 2026· 23% of score

  OpenAI's^[1][2][3][5] API changelog: "August 7, 2025: Released GPT-5 family of models in the API", the entry that introduced gpt-5, gpt-5-mini and gpt-5-nano.

• [5]90%
  Introducing GPT-5 - OpenAI

  openai.com· Published Aug 7, 2025· 4% of score

  OpenAI's^[1][2][3][4] main launch post: GPT-5 as a unified system with a router, and once usage limits are reached "a mini version of each model handles remaining queries"; free users who hit their GPT-5 limit move to GPT-5 mini, "a smaller, faster, and highly capable model".

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