Solar Mini 4 vs Kimi K3.1 Pro vs MiMo-V2.6-Flash
MiMo-V2.6-Flash comes out ahead, 80 to 64 and 46 on our weighted score.
UpstageSolar Mini 4
64/100- ECI—
- Price$0.10 / $0.40
- Context524K
Moonshot AIKimi K3.1 Pro
46/100- ECI—
- Price$2.00 / $10.00
- Context1.05M
- Our pick
XiaomiMiMo-V2.6-Flash
80/100- ECI—
- Price$0.14 / $0.28
- Context1.05M
MiMo-V2.6-Flash is our pick
MiMo-V2.6-Flash is the better all-round choice, scoring 80/100 against Solar Mini 4 (64) and Kimi K3.1 Pro (46). It leads on inputs & features. 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 priceSolar Mini 4 and MiMo-V2.6-FlashSolar Mini 4 $0.175 · MiMo-V2.6-Flash $0.175 · Kimi K3.1 Pro $4.00 per 1M tokens (3:1 blend)
- Longest contextKimi K3.1 Pro and MiMo-V2.6-FlashKimi K3.1 Pro 1,048,576 · MiMo-V2.6-Flash 1,048,576 · Solar Mini 4 524,288 tokens
- Widest inputsMiMo-V2.6-FlashSolar Mini 4: Text · Kimi K3.1 Pro: Text, Images, Video · MiMo-V2.6-Flash: Text, Images, Audio, Video
- Self-hostingMiMo-V2.6-FlashPublishes downloadable weights
| Measure | Weight | Solar Mini 4 | Kimi K3.1 Pro | MiMo-V2.6-Flash |
|---|---|---|---|---|
| Price | 50% | 82 | 20 | 82 |
| Inputs & features | 30% | 45 | 80 | 90 |
| Context window | 20% | 49 | 61 | 61 |
| Overall | 100% | 64/100 | 46/100 | 80/100 |
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 | Solar Mini 4Upstage | Kimi K3.1 ProMoonshot AI | MiMo-V2.6-FlashXiaomi |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $0.10 (best) | $2.00 | $0.14 |
| Output | $0.40 | $10.00 | $0.28 (best) |
| Cached input | $0.01 | $0.20 | $0.0028 (best) |
| Blended (3:1) | $0.175 (best) | $4.00 | $0.175 (best) |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Official Upstage API | Official Moonshot AI API | Official Xiaomi API |
| Limits | |||
| Context window | 524,288 tokens | 1,048,576 tokens (best) | 1,048,576 tokens (best) |
| Max output | 131,072 tokens | 131,072 tokens | 131,072 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | No | Yes | Yes |
| PDFs | No | No | No |
| Audio | No | No | Yes |
| Video | No | Yes | Yes |
| Reasoning | Yesminimal · low · medium · high · xhigh · max | Yeslow · high · max | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | Yes | Yes | Yes |
| Availability | |||
| Weights | Proprietary | Proprietary | Open |
| API model ID | solar-mini4 | kimi-k3.1-pro | mimo-v2.6-flash |
| API providers | 4 | 17 | 23 (best) |
| Released | Sep 22, 2026 | Oct 23, 2026 | Sep 22, 2026 |
| Knowledge cutoff | Feb 2026 | — | — |
What would a month cost?
Enter your expected volume in millions of tokens. List prices only; caching and batch discounts would lower these.
- Solar Mini 4$1.80
- Kimi K3.1 Pro$40.00
- MiMo-V2.6-Flash$1.96
Which should you choose?
Which is better: Solar Mini 4, Kimi K3.1 Pro or MiMo-V2.6-Flash?
MiMo-V2.6-Flash is the better all-round choice, scoring 80/100 against Solar Mini 4 (64) and Kimi K3.1 Pro (46). It leads on inputs & features. 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, Solar Mini 4, Kimi K3.1 Pro or MiMo-V2.6-Flash?
Solar Mini 4 is cheaper at $0.10 input / $0.40 output per million tokens (official Upstage API price). MiMo-V2.6-Flash costs $0.14 input / $0.28 output per million tokens (official Xiaomi API price); Kimi K3.1 Pro costs $2.00 input / $10.00 output per million tokens (official Moonshot AI API price). At a typical mix of three input tokens to one output token, that is $0.175 per million tokens for Solar Mini 4 versus $0.175 for MiMo-V2.6-Flash (1× as much) and $4.00 for Kimi K3.1 Pro (23× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. Solar Mini 4 has not been scored yet, Kimi K3.1 Pro has not been scored yet and MiMo-V2.6-Flash has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Solar Mini 4, Kimi K3.1 Pro and MiMo-V2.6-Flash 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?
Kimi K3.1 Pro and MiMo-V2.6-Flash have the largest context windows (1,048,576 and 1,048,576 tokens), against 524,288 for Solar Mini 4. Maximum output per response: Solar Mini 4 up to 131,072, Kimi K3.1 Pro up to 131,072, MiMo-V2.6-Flash up to 131,072 tokens.
Which can read images, PDFs, audio or video?
Solar Mini 4 accepts text; Kimi K3.1 Pro accepts text, images and video; MiMo-V2.6-Flash accepts text, images, audio and video. MiMo-V2.6-Flash handles the widest range of inputs.
Are any of these open source?
MiMo-V2.6-Flash publishes its weights and can be self-hosted; Solar Mini 4 and Kimi K3.1 Pro is proprietary.
Which is newer?
Kimi K3.1 Pro is the newest, released Oct 23, 2026. Solar Mini 4 came out Sep 22, 2026; MiMo-V2.6-Flash came out Sep 22, 2026. Knowledge cutoff: Solar Mini 4 Feb 2026.
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 Nov 2, 2026.
