TL;DR — Claude Opus 5.5 is the new Anthropic default, Grok 4.7 and GPT-6 Sol and Luna arrive, DeepSeek V4 Pro is back, and saved settings on retired models now move to their replacements.
A full review of every provider's models on 2026-09-23, each change checked against the provider's own pages.
Upgrade notes
- Opus 5.5 defaults to medium effort. On
/thinking autoit runs one level
lower than Opus 5 did; set /thinking high for the old depth.
- GPT-6 Sol and Luna run agent turns with reasoning off. On the connection
Codeep uses for OpenAI (Chat Completions), GPT-6 can call tools only that way, so agent turns send reasoning_effort: "none" whatever /thinking says; /thinking tells you so. Plain chat keeps your tier. Support for OpenAI's Responses API, which lifts this, is being built.
- GPT-6 Astra is no longer offered on OpenAI: it cannot call tools on that
connection at all. Saved settings and custom bots on Astra move to GPT-6 Sol. Astra is still available through OpenRouter.
- **Saved settings on retired models now move to their replacements for
everyone.** Earlier migrations only reached configs created before 2026-08-15, so some of them run for you for the first time: - GLM Coding Plan: GLM-5.2, 5.1 and 5 move to GLM-5.3, GLM-5 Turbo to 5.3 Flash — both plans now accept only those two models. GLM-5 Turbo also moves to 5.3 Flash on Z.AI international pay-per-use. - Qwen: the Token Plan's retired Qwen3.8-Max Preview moves to Qwen3.8-Max; Qwen3-Max and the Qwen3 coders (retiring 2026-10-10) move to Qwen 3.7 Plus or Max, whichever the plan offers. - Gemini 3 previews move to Gemini 3.6 Flash and 3.1 Pro. - ModelScope's old fallback, Qwen3-Coder-480B, is no longer served; it moves to Qwen3.5-397B. - Custom bots, /rewind checkpoints and editor settings pinned to a retired model now run on its replacement instead of failing.
Added
- Claude Opus 5.5 (
claude-opus-5-5), now the Anthropic default: $4/$20,
1M context, cache reads at 5% of input. Codeep leaves it at least 32K reply tokens (64K at Max), because its thinking shares that limit. Opus 5 stays in the picker.
- Grok 4.7 (
grok-4.7): $2/$6, 500K context. The Grok default stays Grok
Build 0.1, which costs half as much.
- GPT-6 Sol ($2/$10) and GPT-6 Luna ($0.10/$0.50), 1.05M context.
- DeepSeek V4 Pro is back — DeepSeek cancelled its retirement. Users moved
to Flash in 3.3.0 stay on Flash and can pick V4 Pro again.
- GLM-5.3 FlashX on Z.AI pay-per-use; Qwen 3.8 Max and Flash on Qwen China
pay-per-use and on the Token Plan.
/thinkingon Kimi Code (kimi-for-coding, now K2.8 Preview with 1M
context).
Changed
- Max sends
maxon GPT-5.6 and GPT-6 (it sentxhigh), andxhighon Grok
4.6 and 4.7. Through OpenRouter, Max goes as high as each model supports instead of stopping at high.
Fixed
- Cost estimates: OpenAI cache writes (GPT-5.6 on) count at 1.25x input
instead of not at all; cache reads use each model's own rate for Opus 5.5, Kimi, every Grok model and GLM (per region); Qwen3.6-Plus is repriced.
- Agent runs on Claude models that call tools without writing text between
calls no longer fail on their second step.
- Kimi Code plan limits (for example K3 past 256K on a Plus plan) come back as
HTTP 401; the editor integration said "No API key configured". It now says the plan may not include that model or limit, and quotes Kimi's message.
- The task planner no longer sends a temperature to models that reject it.