Seed Character vs Qwen3.8 Flash vs MiMo-V2.5
Too close to call on our weighted score (MiMo-V2.5 79, Qwen3.8 Flash 76, Seed Character 75). The right pick depends on what you value most.
ByteDance SeedSeed Character
75/100- ECI—
- Price$0.119 / $0.297
- Context256K
Alibaba (Qwen)Qwen3.8 Flash
76/100- ECI—
- Price$0.15 / $0.47
- Context1M
XiaomiMiMo-V2.5
79/100- ECI—
- Price$0.14 / $0.28
- Context1.05M
Too close to call
It is close. Our weighted score puts them within 3 points (MiMo-V2.5 79/100, Qwen3.8 Flash 76/100, Seed Character 75/100), so choose by what matters most for your work: Seed Character on price and MiMo-V2.5 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 priceSeed CharacterSeed Character $0.163 · MiMo-V2.5 $0.175 · Qwen3.8 Flash $0.23 per 1M tokens (3:1 blend)
- Longest contextMiMo-V2.5MiMo-V2.5 1,048,576 · Qwen3.8 Flash 1,000,000 · Seed Character 256,000 tokens
- Widest inputsMiMo-V2.5Seed Character: Text, Images, Video · Qwen3.8 Flash: Text, Images, Video · MiMo-V2.5: Text, Images, Audio, Video
- Self-hostingMiMo-V2.5Publishes downloadable weights
| Measure | Weight | Seed Character | Qwen3.8 Flash | MiMo-V2.5 |
|---|---|---|---|---|
| Price | 50% | 87 | 80 | 86 |
| Inputs & features | 30% | 80 | 80 | 80 |
| Context window | 20% | 36 | 60 | 61 |
| Overall | 100% | 75/100 | 76/100 | 79/100 |
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 CharacterByteDance Seed | Qwen3.8 FlashAlibaba (Qwen) | MiMo-V2.5Xiaomi |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $0.119 (best) | $0.15 | $0.14 |
| Output | $0.297 | $0.47 | $0.28 (best) |
| Cached input | $0.024 | $0.016 | $0.0028 (best) |
| Blended (3:1) | $0.163 (best) | $0.23 | $0.175 |
| Long-context rate | Over 32K: $0.178 / $0.891 | Same rate | Same rate |
| Price source | Official Volcengine Ark API | Official Alibaba API | Official Xiaomi API |
| Limits | |||
| Context window | 256,000 tokens | 1,000,000 tokens | 1,048,576 tokens (best) |
| Max output | 256,000 tokens (best) | 131,072 tokens | 131,072 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | Yes | Yes | Yes |
| PDFs | No | No | No |
| Audio | No | No | Yes |
| Video | Yes | Yes | Yes |
| Reasoning | Yesminimal · low · high | Yeslow · medium · xhigh | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | Yes | No |
| Availability | |||
| Weights | Proprietary | Proprietary | Open |
| API model ID | doubao-seed-character-260628 | qwen3.8-flash | mimo-v2.5 |
| API providers | 2 | 23 (best) | 21 |
| Released | Jun 23, 2026 | Aug 26, 2026 | Apr 22, 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.
- Seed Character$1.78
- Qwen3.8 Flash$2.44
- MiMo-V2.5$1.96
Which should you choose?
Which is better: Seed Character, Qwen3.8 Flash or MiMo-V2.5?
It is close. Our weighted score puts them within 3 points (MiMo-V2.5 79/100, Qwen3.8 Flash 76/100, Seed Character 75/100), so choose by what matters most for your work: Seed Character on price and MiMo-V2.5 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 Character, Qwen3.8 Flash or MiMo-V2.5?
Seed Character is cheaper at $0.119 input / $0.297 output per million tokens (official Volcengine Ark API price). MiMo-V2.5 costs $0.14 input / $0.28 output per million tokens (official Xiaomi API price); Qwen3.8 Flash costs $0.15 input / $0.47 output per million tokens (official Alibaba API price). At a typical mix of three input tokens to one output token, that is $0.163 per million tokens for Seed Character versus $0.175 for MiMo-V2.5 (1.1× as much) and $0.23 for Qwen3.8 Flash (1.4× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Seed Character has not been scored yet, Qwen3.8 Flash has not been scored yet and MiMo-V2.5 has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Seed Character, Qwen3.8 Flash and MiMo-V2.5 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 has the largest context window at 1,048,576 tokens, against 1,000,000 for Qwen3.8 Flash and 256,000 for Seed Character. Maximum output per response: Seed Character up to 256,000, Qwen3.8 Flash up to 131,072, MiMo-V2.5 up to 131,072 tokens.
Which can read images, PDFs, audio or video?
Seed Character accepts text, images and video; Qwen3.8 Flash accepts text, images and video; MiMo-V2.5 accepts text, images, audio and video. MiMo-V2.5 handles the widest range of inputs.
Are any of these open source?
MiMo-V2.5 publishes its weights and can be self-hosted; Seed Character and Qwen3.8 Flash is proprietary.
Which is newer?
Qwen3.8 Flash is the newest, released Aug 26, 2026. Seed Character came out Jun 23, 2026; MiMo-V2.5 came out Apr 22, 2026. Knowledge cutoff: MiMo-V2.5 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.
