mimo.xiaomi.com2026-09-21officialHN front pageabout the MiMo V2.6 familyHN 1,130 pts · 483 comments3,621 words
Xiaomi releases the MiMo-V2.6 series on September 22nd, 2026, introducing MiMo-V2.6-Pro, MiMo-V2.6-Flash, and the new MiMo-V2.6-Pro-UltraSpeed variant delivering up to 20x faster output speed at the same quality. The models completed 30 RL steps over roughly 750k trajectories at costs of about $0.85M and $2.62M respectively, with DeepSWE v1.1 scores rising from 48.8 to 65.68 for the Pro model. This launch marks a key step in scaling RL compute on verifiable, complex tasks.written, reviewed, cited
- MiMo-V2.6-Pro-UltraSpeed delivers up to 20x faster output speed at the same quality for users requiring extreme generation speed.
- The training run completed in under six days with MiMo-V2.6-Pro costing about $2.62M and MiMo-V2.6-Flash costing about $0.85M.
mimo.xiaomi.com2026-09-27officialabout the MiMo V2.6 familyHN 2 pts · 1 comments1,793 words
MiMo-V2.6 models exhibited tool-call repetition where agents issued identical calls repeatedly, wasting context and stalling tasks. The team defined exact within-turn repetition as (N-U)/N and distinguished it from flooding, then adopted an MOPD-based approach to fix the issue. This solution cost approximately $90,000, significantly less than the $2.31 million estimated for the penalty-threshold fix, and reduced repetition rates substantially.written, reviewed, cited
- The flooding penalty threshold was lowered from 32 calls to eight to suppress abnormal call volume.
- Applying the stricter flooding penalty at full scale required restarting 20 training steps at an estimated cost of $2.31 million.
mimo.mi.com2026-09-22officialabout the MiMo V2.6 familyHN 2 pts · 0 comments311 words
