Solar Pro 4 vs Ornith 1.5 35B A3B
Ornith 1.5 35B A3B comes out ahead, 59 to 55 on our weighted score, though Solar Pro 4 is 9% cheaper per token.
Upstage
Solar Pro 4
55/100- ECI—
- Price$0.30 / $1.20
- Context524K
- Our pick
DeepReinforce
Ornith 1.5 35B A3B
59/100- ECI—
- Price$0.20 / $1.70
- Context262K
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Ornith 1.5 35B A3B is our pick
Ornith 1.5 35B A3B is the better all-round choice, scoring 59/100 against Solar Pro 4 (55). It leads on inputs & features. Solar Pro 4 wins on price and 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 priceSolar Pro 4Solar Pro 4 $0.525 · Ornith 1.5 35B A3B $0.575 per 1M tokens (3:1 blend)
- Longest contextSolar Pro 4Solar Pro 4 524,288 · Ornith 1.5 35B A3B 262,144 tokens
- Widest inputsOrnith 1.5 35B A3BSolar Pro 4: Text · Ornith 1.5 35B A3B: Text, Images
- Self-hostingOrnith 1.5 35B A3BPublishes downloadable weights (MIT)
| Measure | Weight | Solar Pro 4 | Ornith 1.5 35B A3B |
|---|---|---|---|
| Price | 50% | 63 | 61 |
| Inputs & features | 30% | 45 | 70 |
| Context window | 20% | 49 | 37 |
| Overall | 100% | 55/100 | 59/100 |
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 Pro 4Upstage | Ornith 1.5 35B A3BDeepReinforce |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $0.30 | $0.20 (best) |
| Output | $1.20 (best) | $1.70 |
| Cached input | $0.06 | — |
| Blended (3:1) | $0.525 (best) | $0.575 |
| Long-context rate | Same rate | Same rate |
| Price source | Official Upstage API | Median of 2 providers |
| Limits | ||
| Context window | 524,288 tokens (best) | 262,144 tokens |
| Max output | 131,072 tokens | — |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | No | Yes |
| PDFs | No | No |
| Audio | No | No |
| Video | No | No |
| Reasoning | Yesminimal · low · medium · high · xhigh · max | Yes |
| Tool calling | Yes | Yes |
| Structured output | Yes | Yes |
| Availability | ||
| Weights | Proprietary | OpenMIT |
| API model ID | solar-pro4 | — |
| API providers | 3 (best) | 2 |
| Released | Aug 6, 2026 | Aug 18, 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 Pro 4$5.40
- Ornith 1.5 35B A3B$5.40
Which should you choose?
Which is better: Solar Pro 4 or Ornith 1.5 35B A3B?
Ornith 1.5 35B A3B is the better all-round choice, scoring 59/100 against Solar Pro 4 (55). It leads on inputs & features. Solar Pro 4 wins on price and 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, Solar Pro 4 or Ornith 1.5 35B A3B?
Solar Pro 4 is cheaper at $0.30 input / $1.20 output per million tokens (official Upstage API price). Ornith 1.5 35B A3B costs $0.20 input / $1.70 output per million tokens (median across 2 API providers). At a typical mix of three input tokens to one output token, that is $0.525 per million tokens for Solar Pro 4 versus $0.575 for Ornith 1.5 35B A3B (1.1× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Solar Pro 4 has not been scored yet and Ornith 1.5 35B A3B has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Solar Pro 4 and Ornith 1.5 35B A3B 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?
Solar Pro 4 has the largest context window at 524,288 tokens, against 262,144 for Ornith 1.5 35B A3B. Maximum output per response: Solar Pro 4 up to 131,072 tokens.
Which can read images, PDFs, audio or video?
Solar Pro 4 accepts text; Ornith 1.5 35B A3B accepts text and images. Ornith 1.5 35B A3B handles the widest range of inputs.
Are any of these open source?
Ornith 1.5 35B A3B publishes its weights (MIT) and can be self-hosted; Solar Pro 4 is proprietary.
Which is newer?
Ornith 1.5 35B A3B is the newest, released Aug 18, 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.
