MiMo-V2.5-Pro-UltraSpeed vs Sakana Namazu
Sakana Namazu comes out ahead, 51 to 43 on our weighted score.
XiaomiMiMo-V2.5-Pro-UltraSpeed
43/100- ECI—
- Price$1.30 / $2.61
- Context1.05M
- Our pick
Sakana AI
Sakana Namazu
51/100- ECI—
- Price$0.95 / $4.00
- Context262K
Add a model
Make it a three-way comparison.
Sakana Namazu is our pick
Sakana Namazu is the better all-round choice, scoring 51/100 against MiMo-V2.5-Pro-UltraSpeed (43). It leads on inputs & features. MiMo-V2.5-Pro-UltraSpeed wins on context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
- CapabilityNot enough dataNo independent benchmark covers every model here yet
- Lowest priceMiMo-V2.5-Pro-UltraSpeedMiMo-V2.5-Pro-UltraSpeed $1.63 · Sakana Namazu $1.71 per 1M tokens (3:1 blend)
- Longest contextMiMo-V2.5-Pro-UltraSpeedMiMo-V2.5-Pro-UltraSpeed 1,048,576 · Sakana Namazu 262,144 tokens
- Widest inputsSakana NamazuMiMo-V2.5-Pro-UltraSpeed: Text · Sakana Namazu: Text, Images, PDFs
- Self-hostingMiMo-V2.5-Pro-UltraSpeedPublishes downloadable weights
| Measure | Weight | MiMo-V2.5-Pro-UltraSpeed | Sakana Namazu |
|---|---|---|---|
| Price | 50% | 40 | 39 |
| Inputs & features | 30% | 35 | 80 |
| Context window | 20% | 61 | 37 |
| Overall | 100% | 43/100 | 51/100 |
Left out because at least one model lacks the data: capability. The remaining weights were rescaled.
Every spec in one table
Highlighted cells lead their row. Dashes mean the data is not published.
| Specification | MiMo-V2.5-Pro-UltraSpeedXiaomi | Sakana NamazuSakana AI |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $1.30 | $0.95 (best) |
| Output | $2.61 (best) | $4.00 |
| Cached input | $0.011 (best) | $0.15 |
| Blended (3:1) | $1.63 (best) | $1.71 |
| Long-context rate | Same rate | Same rate |
| Price source | Official Xiaomi API | Official Sakana AI API |
| Limits | ||
| Context window | 1,048,576 tokens (best) | 262,144 tokens |
| Max output | 131,072 tokens (best) | 65,536 tokens |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | No | Yes |
| PDFs | No | Yes |
| Audio | No | No |
| Video | No | No |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Structured output | No | Yes |
| Availability | ||
| Weights | Open | Proprietary |
| API model ID | mimo-v2.5-pro-ultraspeed | sakana-namazu |
| API providers | 1 | 5 (best) |
| Released | Jun 8, 2026 | Aug 3, 2026 |
| Knowledge cutoff | Dec 2024 | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- MiMo-V2.5-Pro-UltraSpeed$18.27
- Sakana Namazu$17.50
Which should you choose?
Which is better: MiMo-V2.5-Pro-UltraSpeed or Sakana Namazu?
Sakana Namazu is the better all-round choice, scoring 51/100 against MiMo-V2.5-Pro-UltraSpeed (43). It leads on inputs & features. MiMo-V2.5-Pro-UltraSpeed wins on context window. The score weighs price 50%, inputs & features 30%, context window 20%. None of the shared benchmarks cover every model here yet, so capability is left out of this verdict.
Which is cheaper, MiMo-V2.5-Pro-UltraSpeed or Sakana Namazu?
MiMo-V2.5-Pro-UltraSpeed is cheaper at $1.30 input / $2.61 output per million tokens (official Xiaomi API price). Sakana Namazu costs $0.95 input / $4.00 output per million tokens (official Sakana AI API price). At a typical mix of three input tokens to one output token, that is $1.63 per million tokens for MiMo-V2.5-Pro-UltraSpeed versus $1.71 for Sakana Namazu (1× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. MiMo-V2.5-Pro-UltraSpeed has not been scored yet and Sakana Namazu has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for MiMo-V2.5-Pro-UltraSpeed and Sakana Namazu yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. Both support tool calling for agent workflows.
Which has the bigger context window?
MiMo-V2.5-Pro-UltraSpeed has the largest context window at 1,048,576 tokens, against 262,144 for Sakana Namazu. Maximum output per response: MiMo-V2.5-Pro-UltraSpeed up to 131,072, Sakana Namazu up to 65,536 tokens.
Which can read images, PDFs, audio or video?
MiMo-V2.5-Pro-UltraSpeed accepts text; Sakana Namazu accepts text, images and PDFs. Sakana Namazu handles the widest range of inputs.
Are any of these open source?
MiMo-V2.5-Pro-UltraSpeed publishes its weights and can be self-hosted; Sakana Namazu is proprietary.
Which is newer?
Sakana Namazu is the newest, released Aug 3, 2026. MiMo-V2.5-Pro-UltraSpeed came out Jun 8, 2026. Knowledge cutoff: MiMo-V2.5-Pro-UltraSpeed Dec 2024.
How do you decide the winner?
Each model gets a 0–100 score on capability (50%, independent benchmark results); price (25%, blended price per million tokens (3 input : 1 output), log scale); inputs & features (15%, image, PDF, audio and video input, tool calling, structured output and reasoning); context window (10%, maximum tokens per request, log scale). Dimensions missing for any model are dropped and the remaining weights rescaled, so every model is judged on the same evidence. Specs and prices come from public model listings and the labs’ own API pages; capability scores come from independent benchmark runs. Data updated Oct 4, 2026.
Related comparisons
- Add Seed 2.1 ProThree-way comparison
- MiMo-V2.5-Pro-UltraSpeed vs Seed 2.1 ProByteDance Seed
- MiMo-V2.5-Pro-UltraSpeed vs DeepSeek V4 ProDeepSeek
- MiMo-V2.5-Pro-UltraSpeed vs LongCat-2.0Meituan (LongCat)
- Sakana Namazu vs Seed 2.1 ProByteDance Seed
- Sakana Namazu vs Step 5 PreviewStepFun
- Sakana Namazu vs DeepSeek V4 ProDeepSeek
