MiMo-V2.6 Flash 309B-A15B

XiaomiMiMo's efficiency-focused MIT-licensed omnimodal MoE has 309B total and 15B active parameters, plus a one-million-token context. It handles text, images, video, and audio, with 256 routed experts and 8 active per token.

XiaomiMiMoMixture of expertsagenticreasoning7 machines can run it

Total parameters

309B

Official spec sets memory need

Active parameters

15B

Official spec sets decode speed

Context

Official spec tokens

4-bit weights

168 GB

Calculated before KV cache

This is a sparse mixture of experts. All 309B of weights must be available to the runtime, but only 15B are read per generated token. Ordinary runtimes keep the full quantized model in memory; a runtime-specific SSD-streaming artifact can retain a smaller working set and fetch expert data on demand, trading speed for capacity.

Model specification

Publisher

XiaomiMiMo Official spec

Architecture

Sparse mixture of experts Official spec

Total parameters

309B Official spec

Active parameters

15B per token Official spec

Context length

1,048,576 tokens Official spec

Attention ⓘ

GQA · 4 KV heads × 192 dim × 48 layers Official spec

Licence

MIT Official spec source

Specification confidence ⓘ

High · verified 2026-09-22 Official spec source

Released

22 Sept 2026 Official spec

Official source

Hugging Face

Quantizations and memory

Quantization	Format	Bits/weight	Resident	Download	Quality kept
`MLX 4-bit`	mlx	4.5	168.4 GB	168.4 GB	98.0%
`Q4_K_M`default	gguf	4.85	179.7 GB	179.7 GB	98.5%
`Q5_K_M`	gguf	5.69	210.8 GB	210.8 GB	99.3%
`Q8_0`	gguf	8.5	311.9 GB	311.9 GB	99.9%

Generic weight sizes are computed from the parameter count and bits per weight plus a format-specific overhead. Runtime-specific artifacts use their published resident and download footprints; streamed models can therefore require much more disk than memory. Quality retention is an assumption, not a measured evaluation.

Coding & quality benchmarksCompare coding results →

No published benchmark results have been imported for this model yet. This is missing evidence, not a score of zero.

We show source metrics rather than deriving one opaque quality number. Different benchmarks measure genuinely different things, and collapsing them into a single score would hide exactly the disagreements worth seeing.

Recommendations

Cheapest that can run it

Mac Studio M3 Ultra 256 GB

~42.2–60.7 t/s · $5,674

Lowest purchase price among configurations where the model fits at some quantization in our catalogue. Speed is not considered.

Cheapest above 20 t/s

Mac Studio M3 Ultra 256 GB

~42.2–60.7 t/s · $5,674

20 tokens/second is roughly the point at which generation keeps pace with reading. Below it, interactive use feels like waiting.

Cheapest above 40 t/s

Mac Studio M3 Ultra 256 GB

~42.2–60.7 t/s · $5,674

40 tokens/second is the threshold most people describe as comfortable for coding agents, where output arrives faster than you can review it.

Fastest with real measurements

Nothing in the database qualifies.

Highest throughput among configurations with an actual published measurement rather than our estimate.

Best throughput per purchase-price unit

Mac Studio M5 Ultra 256 GB

~73.4–106 t/s · $8,647

Highest decode tokens/second per 1,000 units of the displayed purchase currency. Ignores running costs and resale — see the economics section for the full picture.

Hardware that runs MiMo-V2.6 Flash 309B-A15B0 measured, 7 estimated

Quantization

Minimum decode: 0 t/s

7 of 7 rows

Hardware↕	Quant	Memory↕	Decode▼	Prefill↕	Context	Price↕	Fit	Confidence↕
NVIDIA DGX H200 (8x H200, 1,128 GB) NVIDIA · 1,128 GB · 38,400 GB/s	`Q8_0` recommended	326.2 GB	~393–566 t/s	~39300–81620 t/s	1024K	$359,430	Comfortable	Estimated
Lenovo ThinkStation PX (4x RTX PRO 6000, 384 GB) Lenovo · 384 GB · 7,168 GB/s	`Q5_K_M` recommended	220.5 GB	~135–194 t/s	~1890–3920 t/s	512K	$58,553	Comfortable	Estimated
Mac Studio M5 Ultra 256 GB Apple · 256 GB · 1,200 GB/s	`Q4_K_M` recommended	187.2 GB	~73.4–106 t/s	~426–885 t/s	128K	$8,647	Fits	Estimated
NVIDIA DGX Station GB300 (748 GB) NVIDIA · 748 GB · 7,100 GB/s	`Q8_0` recommended	323.4 GB	~44.1–63.4 t/s	~5250–10910 t/s	1024K	$90,082	Comfortable	Estimated
Mac Studio M5 Ultra 512 GB Apple · 512 GB · 1,200 GB/s	`Q8_0` recommended	323.4 GB	~43.5–62.7 t/s	~426–885 t/s	512K	$11,350	Comfortable	Estimated
Mac Studio M3 Ultra 256 GB Apple · 256 GB · 819 GB/s	`Q4_K_M` recommended	187.2 GB	~42.2–60.7 t/s	~103–214 t/s	128K	$5,674	Fits	Estimated
Mac Studio M3 Ultra 512 GB Apple · 512 GB · 819 GB/s	`Q8_0` recommended	323.4 GB	~24.6–35.4 t/s	~103–214 t/s	512K	$8,287	Comfortable	Estimated