User finds ChatGPT routing changed: Medium/High effort tasks now default to 5.5 mini
coylter · reddit · 2026-08-23
A user reports a significant and unannounced change in ChatGPT's model routing strategy. Reproducible tests show that while 'Instant' mode uses 5.6 Sol, 'Medium', 'High', and 'Very High' modes now all default to 5.5 mini. The user notes a noticeable degradation in performance with 5.5 mini, citing basic errors like forgetting to fill in email subjects.
Related event: ChatGPT users report silent downgrade from GPT-5.6 to 5.5-mini(4 posts)→
More from Models
- Unverified: internal snapshot labeled gpt-6-astra-api-priv-ev3 spotted on model tracker — lyraxana · 2026-10-16
- NVIDIA releases Nemotron 3.5 Bolt 74B MoE that fits in 24GB VRAM at 2-bit — NerdyRodent · 2026-10-16
- Muse Code 1.4.8 cuts token usage; all user quotas reset immediately — alexandr_wang · 2026-10-16
- Alibaba and Baidu to power key parts of Apple's AI services in China — nordicinst · 2026-10-16
- Cornell and Amazon revisit the 16x pretraining compute gap: diffusion LMs need only 3-8x — LucaAmb · 2026-10-16
- Image Decision Benchmark JevImageBench hits v0.3.0 with reshuffled Top 5 — airesearch12 · 2026-10-16