MiniMax M3.1 Flash vs GLM-5.3-Flash
MiniMax M3.1 Flash scores higher on the intelligence index, 43 against 42. None of the 37 machines here still sold at a published price runs MiniMax M3.1 Flash at 32k of context. GLM-5.3-Flash runs on the Mac Studio M5 Ultra, 256GB, from $10,799. At 500k tokens a day that machine pays for itself in 965 years running GLM-5.3-Flash.
| MiniMax M3.1 Flash | GLM-5.3-Flash | |
|---|---|---|
| Intelligence index | 43 | 42 |
| Class | Sonnet-class | Sonnet-class |
| Weights | 249 GB | 189 GB |
| Needs at 32k | 254 GB | 190 GB |
| Quantisation | UD-Q4_K_XL | UD-Q4_K_M |
| Parameters | 428B (23B active) | 321.3B (18B active) |
| Max context | 1M | 1M |
| API price per 1M | $0.09 in / $0.5 out | $0.075 in / $0.25 out |
| Licence | MiniMax Community License | MIT |
| Machines here that run it | 0 of 37 | 1 of 37 |
| Cheapest machine that runs it | none listed | Mac Studio M5 Ultra, 256GB $10,799 |
Run MiniMax M3.1 Flash in the calculator · or GLM-5.3-Flash on the Mac Studio M5 Ultra, 256GB
Machines that run one and not the other
GLM-5.3-Flash needs 190 GB of memory at 32k of context and MiniMax M3.1 Flash needs 254 GB. That puts GLM-5.3-Flash on 1 of the 37 machines priced here that MiniMax M3.1 Flash does not, starting at $10,799.
| Machine | Price | Memory | Speed on GLM-5.3-Flash | Pay-back |
|---|---|---|---|---|
| Mac Studio M5 Ultra, 256GB | $10,799 | 256 GB | 32 tok/s estimated | Pays back in 965 years |
GLM-5.3-Flash is also head to head with Qwen3.8 Flash Next below it on the leaderboard. One more model needs much the same memory: Tencent Hy3.
The assumptions behind both columns
Both columns use the same usage: 500k tokens a day at 15:1 input to output, 32k of context, $0.17 per kWh, and today's API prices held flat. Speeds marked estimated are worked out from memory bandwidth rather than measured, and pay-back scales with them. Where nobody rents an open model by the token, its API prices are the nearest hosted model's, named beside them. Machines are the 37 here with a published price that are still sold. Change any of it in the calculator.
More head to head: what MiniMax M3.1 Flash needs · every machine that runs GLM-5.3-Flash · every other match-up · both against the frontier · the quickest pay-back at each level of use