MiniCPM5-2B vs Solar Pro 4 vs Qwen3.8 Flash Next
Qwen3.8 Flash Next comes out ahead, 70 to 55 and 53 on our weighted score, and it is the cheaper option too.
OpenBMB
MiniCPM5-2B
53/100- ECI—
- Price$0.124 / $0.743
- Context131K
Upstage
Solar Pro 4
55/100- ECI—
- Price$0.30 / $1.20
- Context524K
- Our pick
Alibaba (Qwen)Qwen3.8 Flash Next
70/100- ECI—
- Price$0.20 / $0.50
- Context262K
Qwen3.8 Flash Next is our pick
Qwen3.8 Flash Next is the better all-round choice, scoring 70/100 against Solar Pro 4 (55) and MiniCPM5-2B (53). It leads on inputs & features. Solar Pro 4 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 priceQwen3.8 Flash NextQwen3.8 Flash Next $0.275 · MiniCPM5-2B $0.279 · Solar Pro 4 $0.525 per 1M tokens (3:1 blend)
- Longest contextSolar Pro 4Solar Pro 4 524,288 · Qwen3.8 Flash Next 262,144 · MiniCPM5-2B 131,072 tokens
- Widest inputsQwen3.8 Flash NextMiniCPM5-2B: Text · Solar Pro 4: Text · Qwen3.8 Flash Next: Text, Images, Video
- Self-hostingMiniCPM5-2B and Qwen3.8 Flash NextPublishes downloadable weights (apache-2.0 and qwen-community-1.0)
| Measure | Weight | MiniCPM5-2B | Solar Pro 4 | Qwen3.8 Flash Next |
|---|---|---|---|---|
| Price | 50% | 76 | 63 | 76 |
| Inputs & features | 30% | 35 | 45 | 80 |
| Context window | 20% | 24 | 49 | 37 |
| Overall | 100% | 53/100 | 55/100 | 70/100 |
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 | MiniCPM5-2BOpenBMB | Solar Pro 4Upstage | Qwen3.8 Flash NextAlibaba (Qwen) |
|---|---|---|---|
| Capability | |||
| Capabilities Index (ECI) | — | — | — |
| ECI rank | — | — | — |
| Price per million tokens | |||
| Input | $0.124 (best) | $0.30 | $0.20 |
| Output | $0.743 | $1.20 | $0.50 (best) |
| Cached input | — | $0.06 | — |
| Blended (3:1) | $0.279 | $0.525 | $0.275 (best) |
| Long-context rate | Same rate | Same rate | Same rate |
| Price source | Median of 1 providers | Official Upstage API | Median of 5 providers |
| Limits | |||
| Context window | 131,072 tokens | 524,288 tokens (best) | 262,144 tokens |
| Max output | 131,072 tokens | 131,072 tokens | 131,072 tokens |
| Inputs and features | |||
| Text | Yes | Yes | Yes |
| Images | No | No | Yes |
| PDFs | No | No | No |
| Audio | No | No | No |
| Video | No | No | Yes |
| Reasoning | Yes | Yesminimal · low · medium · high · xhigh · max | Yes |
| Tool calling | Yes | Yes | Yes |
| Structured output | No | Yes | Yes |
| Availability | |||
| Weights | Openapache-2.0 | Proprietary | Openqwen-community-1.0 |
| API model ID | — | solar-pro4 | — |
| API providers | 1 | 3 | 5 (best) |
| Released | Sep 6, 2026 | Aug 6, 2026 | Aug 27, 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.
- MiniCPM5-2B$2.73
- Solar Pro 4$5.40
- Qwen3.8 Flash Next$3.00
Which should you choose?
Which is better: MiniCPM5-2B, Solar Pro 4 or Qwen3.8 Flash Next?
Qwen3.8 Flash Next is the better all-round choice, scoring 70/100 against Solar Pro 4 (55) and MiniCPM5-2B (53). It leads on inputs & features. Solar Pro 4 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, MiniCPM5-2B, Solar Pro 4 or Qwen3.8 Flash Next?
Qwen3.8 Flash Next is cheaper at $0.20 input / $0.50 output per million tokens (median across 5 API providers). MiniCPM5-2B costs $0.124 input / $0.743 output per million tokens (median across 1 API provider); Solar Pro 4 costs $0.30 input / $1.20 output per million tokens (official Upstage API price). At a typical mix of three input tokens to one output token, that is $0.275 per million tokens for Qwen3.8 Flash Next versus $0.279 for MiniCPM5-2B (1× as much) and $0.525 for Solar Pro 4 (1.9× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers all three models yet. MiniCPM5-2B has not been scored yet, Solar Pro 4 has not been scored yet and Qwen3.8 Flash Next has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for MiniCPM5-2B, Solar Pro 4 and Qwen3.8 Flash Next 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?
Solar Pro 4 has the largest context window at 524,288 tokens, against 262,144 for Qwen3.8 Flash Next and 131,072 for MiniCPM5-2B. Maximum output per response: MiniCPM5-2B up to 131,072, Solar Pro 4 up to 131,072, Qwen3.8 Flash Next up to 131,072 tokens.
Which can read images, PDFs, audio or video?
MiniCPM5-2B accepts text; Solar Pro 4 accepts text; Qwen3.8 Flash Next accepts text, images and video. Qwen3.8 Flash Next handles the widest range of inputs.
Are any of these open source?
MiniCPM5-2B and Qwen3.8 Flash Next publishes its weights (apache-2.0 and qwen-community-1.0) and can be self-hosted; Solar Pro 4 is proprietary.
Which is newer?
MiniCPM5-2B is the newest, released Sep 6, 2026. Qwen3.8 Flash Next came out Aug 27, 2026; Solar Pro 4 came out Aug 6, 2026. Knowledge cutoff: Solar Pro 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 Oct 4, 2026.
