GLM-5.3-Flash and MiMo-V2.6-Pro are close rivals from Z AI and Xiaomi. No hands-on testing went into this write-up; it summarises the recorded benchmark, price and speed data for both models. Price separates them more than anything else; on a blended basis MiMo-V2.6-Pro costs 2.3 times as much as GLM-5.3-Flash.
Price per token
GLM-5.3-Flash lists $0.15 per million input tokens and $0.50 per million output tokens; MiMo-V2.6-Pro lists $0.435 and $0.87. MiMo-V2.6-Pro costs 1.7 times as much per output token.
Take 1 million input tokens and 200,000 output tokens: that comes to $0.25 on GLM-5.3-Flash and $0.61 on MiMo-V2.6-Pro. Scale it up to classifying 100,000 short messages at 150 input tokens and 5 output tokens each and the bill is $2.50 for GLM-5.3-Flash against $6.96 for MiMo-V2.6-Pro. On a 3:1 blend of input to output tokens, that works out to $0.238 versus $0.544 per million.
GLM-5.3-Flash is the faster writer
GLM-5.3-Flash generates about 56 tokens per second and MiMo-V2.6-Pro about 41 tokens per second. That makes GLM-5.3-Flash roughly 1.4 times as fast at writing. Before any text appears, GLM-5.3-Flash takes 1.6 seconds and MiMo-V2.6-Pro 3.0 seconds. GLM-5.3-Flash gets to its first token 1.9 times as fast.
Put together, a 1,000-token answer would take about 20 seconds from GLM-5.3-Flash and 27 seconds from MiMo-V2.6-Pro, counting the first-token wait.
How the intelligence index compares
GLM-5.3-Flash records 27.8 on the intelligence index and MiMo-V2.6-Pro records 29.9. It is a small margin for an index that averages many evaluations.
Across the 109 active models with an intelligence score in the catalogue, GLM-5.3-Flash ranks 63rd and MiMo-V2.6-Pro ranks 55th.
The catalogue does not yet split either model's score into coding and math indexes.
Is the price in proportion?
Dividing the blended price by the intelligence index gives a rough cost per point: $0.0085 for GLM-5.3-Flash and $0.018 for MiMo-V2.6-Pro, per million tokens. So MiMo-V2.6-Pro buys its higher score at a premium, while GLM-5.3-Flash is the value pick, paying 53% less per point.
Generation gap
The release dates are August 26, 2026 for GLM-5.3-Flash and September 21, 2026 for MiMo-V2.6-Pro, 26 days apart. That is close enough to count them as the same generation.

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