Report: Claude Sonnet 5.5 lands within days, grey-testing now
Some Claude Code accounts are already routed to it — a day before OpenAI's DevDay, where a leaked $500 'Pro Max' tier may also debut.
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Grey-testing now, partners on a newer checkpoint
Sonnet 5.5 is reportedly in grey testing inside Claude Code, with some accounts already routed to it and partners running a newer checkpoint they're said to be happy with — pointing to a launch within days, likely on or before DevDay. Hold heavy Sonnet-5 prompt and eval work until it lands: a mid-tier refresh could reset the cost/quality math you just tuned for Opus 5.5.
OpenAI's own repo leaks a $500 'Pro Max'
A `promax` plan type shown as "Pro (Max)" was merged into OpenAI's public Codex repo on Sept 25; TestingCatalog pegs it at $500/month with "Fastest Work" and Codex access. If you live in Codex, a new top tier likely debuts at tomorrow's DevDay — check whether your current plan's limits or model access shift under it.
Google Flow build points to Nano Banana 2.1
A new Google Flow web build swaps its image-model references to "Nano Banana 2.1," a sign an incremental update to Google's image generator is staged behind the scenes. If you generate or edit images through Flow or Gemini, expect a quality bump soon — worth re-testing prompts and pipelines before it flips on.