Seed Evolving vs Gemini Robotics-ER 1.6 Preview vs MiMo-V2.5-Pro-UltraSpeed
Too close to call on our weighted score (Seed Evolving 50, Gemini Robotics-ER 1.6 Preview 50, MiMo-V2.5-Pro-UltraSpeed 43). The right pick depends on what you value most.
ByteDance SeedSeed Evolving
50/100- ECI—
- Price$0.891 / $4.45
- Context256K
GoogleGemini Robotics-ER 1.6 Preview
50/100- ECI—
- Price$1.00 / $5.00
- Context131K
XiaomiMiMo-V2.5-Pro-UltraSpeed
43/100- ECI—
- Price$1.30 / $2.61
- Context1.05M
Too close to call
It is close. Our weighted score puts them within a point (Seed Evolving 50/100, Gemini Robotics-ER 1.6 Preview 50/100, MiMo-V2.5-Pro-UltraSpeed 43/100), so choose by what matters most for your work: MiMo-V2.5-Pro-UltraSpeed on price and MiMo-V2.5-Pro-UltraSpeed for long inputs. 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 · Seed Evolving $1.78 · Gemini Robotics-ER 1.6 Preview $2.00 per 1M tokens (3:1 blend)
- Longest contextMiMo-V2.5-Pro-UltraSpeedMiMo-V2.5-Pro-UltraSpeed 1,048,576 · Seed Evolving 256,000 · Gemini Robotics-ER 1.6 Preview 131,072 tokens
- Widest inputsGemini Robotics-ER 1.6 PreviewSeed Evolving: Text, Images, Video · Gemini Robotics-ER 1.6 Preview: Text, Images, Audio, Video · MiMo-V2.5-Pro-UltraSpeed: Text
- Self-hostingMiMo-V2.5-Pro-UltraSpeedPublishes downloadable weights
| Measure | Weight | Seed Evolving | Gemini Robotics-ER 1.6 Preview | MiMo-V2.5-Pro-UltraSpeed |
|---|---|---|---|---|
| Price | 50% | 38 | 36 | 40 |
| Inputs & features | 30% | 80 | 90 | 35 |
| Context window | 20% | 36 | 24 | 61 |
| Overall | 100% | 50/100 | 50/100 | 43/100 |
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 | Seed EvolvingByteDance Seed | Gemini Robotics-ER 1.6 PreviewGoogle | MiMo-V2.5-Pro-UltraSpeedXiaomi |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $0.891 (best) | $1.00 | $1.30 |
| Output | $4.45 | $5.00 | $2.61 (best) |
| Cached input | $0.178 | — | $0.011 (best) |
| Blended (3:1) | $1.78 | $2.00 | $1.63 (best) |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Official Volcengine Ark API | Median of 1 providers | Official Xiaomi API |
| Limits | |||
| Context window | 256,000 tokens | 131,072 tokens | 1,048,576 tokens (best) |
| Max output | 256,000 tokens (best) | 65,536 tokens | 131,072 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | No |
| PDFs | No | No | No |
| Audio | No | Yes | No |
| Video | Yes | Yes | No |
| Reasoning | Yesminimal · low · medium · high · xhigh · max | Yes | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | Yes | No |
| Availability | |||
| Weights | Proprietary | Proprietary | Open |
| API model ID | doubao-seed-evolving | — | mimo-v2.5-pro-ultraspeed |
| API providers | 2 (best) | 1 | 1 |
| Released | Jun 23, 2026 | Apr 14, 2026 | Jun 8, 2026 |
| Knowledge cutoff | — | Jan 2025 | 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.
- Seed Evolving$17.81
- Gemini Robotics-ER 1.6 Preview$20.00
- MiMo-V2.5-Pro-UltraSpeed$18.27
Which should you choose?
Which is better: Seed Evolving, Gemini Robotics-ER 1.6 Preview or MiMo-V2.5-Pro-UltraSpeed?
It is close. Our weighted score puts them within a point (Seed Evolving 50/100, Gemini Robotics-ER 1.6 Preview 50/100, MiMo-V2.5-Pro-UltraSpeed 43/100), so choose by what matters most for your work: MiMo-V2.5-Pro-UltraSpeed on price and MiMo-V2.5-Pro-UltraSpeed for long inputs. 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, Seed Evolving, Gemini Robotics-ER 1.6 Preview or MiMo-V2.5-Pro-UltraSpeed?
MiMo-V2.5-Pro-UltraSpeed is cheaper at $1.30 input / $2.61 output per million tokens (official Xiaomi API price). Seed Evolving costs $0.891 input / $4.45 output per million tokens (official Volcengine Ark API price); Gemini Robotics-ER 1.6 Preview costs $1.00 input / $5.00 output per million tokens (median across 1 API provider). 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 $1.78 for Seed Evolving (1.1× as much) and $2.00 for Gemini Robotics-ER 1.6 Preview (1.2× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Seed Evolving has not been scored yet, Gemini Robotics-ER 1.6 Preview has not been scored yet and MiMo-V2.5-Pro-UltraSpeed has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Seed Evolving, Gemini Robotics-ER 1.6 Preview and MiMo-V2.5-Pro-UltraSpeed yet, so there is no like-for-like coding score. Test both on a sample of your own tasks. All three 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 256,000 for Seed Evolving and 131,072 for Gemini Robotics-ER 1.6 Preview. Maximum output per response: Seed Evolving up to 256,000, Gemini Robotics-ER 1.6 Preview up to 65,536, MiMo-V2.5-Pro-UltraSpeed up to 131,072 tokens.
Which can read images, PDFs, audio or video?
Seed Evolving accepts text, images and video; Gemini Robotics-ER 1.6 Preview accepts text, images, audio and video; MiMo-V2.5-Pro-UltraSpeed accepts text. Gemini Robotics-ER 1.6 Preview 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; Seed Evolving and Gemini Robotics-ER 1.6 Preview is proprietary.
Which is newer?
Seed Evolving is the newest, released Jun 23, 2026. MiMo-V2.5-Pro-UltraSpeed came out Jun 8, 2026; Gemini Robotics-ER 1.6 Preview came out Apr 14, 2026. Knowledge cutoff: Gemini Robotics-ER 1.6 Preview Jan 2025, 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.
