2026/5/21 23:31 (UTC+8) · New Model · OpenAI 🚀 OpenAI chat-latest launches · Always tracks ChatGPT’s default Instant model — OpenAI introduces the version-less aliasDocumentation Index
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chat-latest, replacing the deprecated gpt-5.2-chat-latest / gpt-5.3-chat-latest (deprecation announced 5/8), auto-tracking ChatGPT’s current default Instant model (currently GPT-5.5 Instant). 400K context + 128K output + multimodal input (text / image), ~50%+ fewer hallucinations vs the previous generation.
💰 List price matches OpenAI · Recharge promo brings effective cost to 79-86% — APIYI’s official-proxy channel is listed at $5/$30 per 1M tokens (cached input $0.50), identical to OpenAI’s rates. Stacking the recharge bonus promo brings effective cost down to 79-86% of list. Default group + direct call works — existing Tokens drop in without config changes.
📖 Launch notes: /en/news/chat-latest-launch
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