Leaks: Opus 5.5 stealth-tested with cheaper pricing, while Qwen 4, Kimi K3.1, Step 5 loom

WorldofAI · youtube · 2026-09-21

This AI news roundup covers a batch of rumored model releases:

Anthropic Opus 5.5: reportedly in stealth testing, with leaks pointing to cheaper pricing, a huge context window, and an imminent release
Qwen 4: possibly revealed at the Apsara Conference; Qwen-Image-2.1 is a 7B open-weight image generation/editing model with native transparency support
Kimi K3.1: being teased by Moonshot AI
MiniMax M3.1 / M3Pro: references spotted in recent code
Step 5 Preview: a 600B MoE model with only 27B active parameters

All items are rumors or previews, not officially confirmed.

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