Solar Pro 2 vs Gemini 2.5 Pro Preview 06-05
Too close to call on our weighted score (Solar Pro 2 51, Gemini 2.5 Pro Preview 06-05 48). The right pick depends on what you value most.
UpstageSolar Pro 2
51/100- ECI—
- Price$0.25 / $0.25
- Context66K
GoogleGemini 2.5 Pro Preview 06-05
48/100- ECI—
- Price$1.22 / $9.75
- Context1.05M
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Make it a three-way comparison.
Too close to call
It is close. Our weighted score puts them within 2 points (Solar Pro 2 51/100, Gemini 2.5 Pro Preview 06-05 48/100), so choose by what matters most for your work: Solar Pro 2 on price and Gemini 2.5 Pro Preview 06-05 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 2Solar Pro 2 $0.25 · Gemini 2.5 Pro Preview 06-05 $3.35 per 1M tokens (3:1 blend)
- Longest contextGemini 2.5 Pro Preview 06-05Gemini 2.5 Pro Preview 06-05 1,048,576 · Solar Pro 2 65,536 tokens
- Widest inputsGemini 2.5 Pro Preview 06-05Solar Pro 2: Text · Gemini 2.5 Pro Preview 06-05: Text, Images, PDFs, Audio
- Self-hostingNo open weightsBoth are available only through APIs
| Measure | Weight | Solar Pro 2 | Gemini 2.5 Pro Preview 06-05 |
|---|---|---|---|
| Price | 50% | 75 | 24 |
| Inputs & features | 30% | 35 | 80 |
| Context window | 20% | 12 | 61 |
| Overall | 100% | 51/100 | 48/100 |
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 2Upstage | Gemini 2.5 Pro Preview 06-05Google |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $0.25 (best) | $1.22 |
| Output | $0.25 (best) | $9.75 |
| Cached input | — | — |
| Blended (3:1) | $0.25 (best) | $3.35 |
| Long-context rate | Same rate | Same rate |
| Price source | Official Upstage API | Median of 4 providers |
| Limits | ||
| Context window | 65,536 tokens | 1,048,576 tokens (best) |
| Max output | 8,192 tokens | 65,536 tokens (best) |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | No | Yes |
| PDFs | No | Yes |
| Audio | No | Yes |
| Video | No | No |
| Reasoning | Yesminimal · high | Yes |
| Tool calling | Yes | Yes |
| Structured output | No | No |
| Availability | ||
| Weights | Proprietary | Proprietary |
| API model ID | solar-pro2 | — |
| API providers | 2 | 4 (best) |
| Released | May 20, 2025 | Jun 5, 2025 |
| Knowledge cutoff | Mar 2025 | Jan 31, 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 2$3.00
- Gemini 2.5 Pro Preview 06-05$31.69
Which should you choose?
Which is better: Solar Pro 2 or Gemini 2.5 Pro Preview 06-05?
It is close. Our weighted score puts them within 2 points (Solar Pro 2 51/100, Gemini 2.5 Pro Preview 06-05 48/100), so choose by what matters most for your work: Solar Pro 2 on price and Gemini 2.5 Pro Preview 06-05 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 2 or Gemini 2.5 Pro Preview 06-05?
Solar Pro 2 is cheaper at $0.25 input / $0.25 output per million tokens (official Upstage API price). Gemini 2.5 Pro Preview 06-05 costs $1.22 input / $9.75 output per million tokens (median across 4 API providers). At a typical mix of three input tokens to one output token, that is $0.25 per million tokens for Solar Pro 2 versus $3.35 for Gemini 2.5 Pro Preview 06-05 (13× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Solar Pro 2 has not been scored yet and Gemini 2.5 Pro Preview 06-05 has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Solar Pro 2 and Gemini 2.5 Pro Preview 06-05 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?
Gemini 2.5 Pro Preview 06-05 has the largest context window at 1,048,576 tokens, against 65,536 for Solar Pro 2. Maximum output per response: Solar Pro 2 up to 8,192, Gemini 2.5 Pro Preview 06-05 up to 65,536 tokens.
Which can read images, PDFs, audio or video?
Solar Pro 2 accepts text; Gemini 2.5 Pro Preview 06-05 accepts text, images, PDFs and audio. Gemini 2.5 Pro Preview 06-05 handles the widest range of inputs.
Are any of these open source?
No. Solar Pro 2 and Gemini 2.5 Pro Preview 06-05 are proprietary and only available through APIs and apps.
Which is newer?
Gemini 2.5 Pro Preview 06-05 is the newest, released Jun 5, 2025. Solar Pro 2 came out May 20, 2025. Knowledge cutoff: Solar Pro 2 Mar 2025, Gemini 2.5 Pro Preview 06-05 Jan 31, 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 Nov 2, 2026.
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