Solar Pro 3 vs Hy3 preview
Too close to call on our weighted score (Hy3 preview 56, Solar Pro 3 55). The right pick depends on what you value most.
Upstage
Solar Pro 3
55/100- ECI—
- Price$0.25 / $0.25
- Context131K
TencentHy3 preview
56/100- ECI—
- Price$0.176 / $0.586
- Context256K
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Make it a three-way comparison.
Too close to call
It is close. Our weighted score puts them within 1 points (Hy3 preview 56/100, Solar Pro 3 55/100), so choose by what matters most for your work: Solar Pro 3 on price and Hy3 preview 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 priceSolar Pro 3Solar Pro 3 $0.25 · Hy3 preview $0.279 per 1M tokens (3:1 blend)
- Longest contextHy3 previewHy3 preview 256,000 · Solar Pro 3 131,072 tokens
- Widest inputsSame inputsSolar Pro 3: Text · Hy3 preview: Text
- Self-hostingHy3 previewPublishes downloadable weights
| Measure | Weight | Solar Pro 3 | Hy3 preview |
|---|---|---|---|
| Price | 50% | 78 | 76 |
| Inputs & features | 30% | 35 | 35 |
| Context window | 20% | 24 | 36 |
| Overall | 100% | 55/100 | 56/100 |
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 3Upstage | Hy3 previewTencent |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $0.25 | $0.176 (best) |
| Output | $0.25 (best) | $0.586 |
| Cached input | — | — |
| Blended (3:1) | $0.25 (best) | $0.279 |
| Long-context rate | Same rate | Same rate |
| Price source | Official Upstage API | Median of 4 providers |
| Limits | ||
| Context window | 131,072 tokens | 256,000 tokens (best) |
| Max output | 8,192 tokens | 64,000 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | No | No |
| PDFs | No | No |
| Audio | No | No |
| Video | No | No |
| Reasoning | Yeslow · medium · high | Yeslow · medium · high |
| Tool calling | Yes | Yes |
| Structured output | No | No |
| Availability | ||
| Weights | Proprietary | Open |
| API model ID | solar-pro3 | hy3-preview |
| API providers | 2 | 5 (best) |
| Released | Jan 2026 | Apr 20, 2026 |
| Knowledge cutoff | Mar 2025 | — |
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 3$3.00
- Hy3 preview$2.93
Which should you choose?
Which is better: Solar Pro 3 or Hy3 preview?
It is close. Our weighted score puts them within 1 points (Hy3 preview 56/100, Solar Pro 3 55/100), so choose by what matters most for your work: Solar Pro 3 on price and Hy3 preview 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, Solar Pro 3 or Hy3 preview?
Solar Pro 3 is cheaper at $0.25 input / $0.25 output per million tokens (official Upstage API price). Hy3 preview costs $0.176 input / $0.586 output per million tokens (median across 4 API providers; free on Tencent TokenHub). At a typical mix of three input tokens to one output token, that is $0.25 per million tokens for Solar Pro 3 versus $0.279 for Hy3 preview (1.1× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Solar Pro 3 has not been scored yet and Hy3 preview has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Solar Pro 3 and Hy3 preview 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?
Hy3 preview has the largest context window at 256,000 tokens, against 131,072 for Solar Pro 3. Maximum output per response: Solar Pro 3 up to 8,192, Hy3 preview up to 64,000 tokens.
Which can read images, PDFs, audio or video?
Solar Pro 3 accepts text; Hy3 preview accepts text. They handle the same number of input types.
Are any of these open source?
Hy3 preview publishes its weights and can be self-hosted; Solar Pro 3 is proprietary.
Which is newer?
Hy3 preview is the newest, released Apr 20, 2026. Solar Pro 3 came out Jan 2026. Knowledge cutoff: Solar Pro 3 Mar 2025.
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.
