Palmyra X5 vs Solar Pro 2
Solar Pro 2 comes out ahead, 51 to 47 on our weighted score, and it is the cheaper option too.
Writer
Palmyra X5
47/100- ECI—
- Price$0.60 / $6.00
- Context1M
- Our pick
UpstageSolar Pro 2
51/100- ECI—
- Price$0.25 / $0.25
- Context66K
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Make it a three-way comparison.
Solar Pro 2 is our pick
Solar Pro 2 is the better all-round choice, scoring 51/100 against Palmyra X5 (47). It leads on price. Palmyra X5 wins on inputs & features 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 2Solar Pro 2 $0.25 · Palmyra X5 $1.95 per 1M tokens (3:1 blend)
- Longest contextPalmyra X5Palmyra X5 1,000,000 · Solar Pro 2 65,536 tokens
- Widest inputsPalmyra X5Palmyra X5: Text, Images · Solar Pro 2: Text
- Self-hostingNo open weightsBoth are available only through APIs
| Measure | Weight | Palmyra X5 | Solar Pro 2 |
|---|---|---|---|
| Price | 50% | 35 | 75 |
| Inputs & features | 30% | 60 | 35 |
| Context window | 20% | 60 | 12 |
| Overall | 100% | 47/100 | 51/100 |
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 | Palmyra X5Writer | Solar Pro 2Upstage |
|---|---|---|
| Capability | ||
| Capabilities Index (ECI) | — | — |
| ECI rank | — | — |
| Price per million tokens | ||
| Input | $0.60 | $0.25 (best) |
| Output | $6.00 | $0.25 (best) |
| Cached input | — | — |
| Blended (3:1) | $1.95 | $0.25 (best) |
| Long-context rate | Same rate | Same rate |
| Price source | Median of 4 providers | Official Upstage API |
| Limits | ||
| Context window | 1,000,000 tokens (best) | 65,536 tokens |
| Max output | 8,192 tokens | 8,192 tokens |
| Inputs and features | ||
| Text | Yes | Yes |
| Images | Yes | No |
| PDFs | No | No |
| Audio | No | No |
| Video | No | No |
| Reasoning | Yes | Yesminimal · high |
| Tool calling | Yes | Yes |
| Structured output | No | No |
| Availability | ||
| Weights | Proprietary | Proprietary |
| API model ID | — | solar-pro2 |
| API providers | 4 (best) | 2 |
| Released | Apr 28, 2025 | May 20, 2025 |
| 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.
- Palmyra X5$18.00
- Solar Pro 2$3.00
Which should you choose?
Which is better: Palmyra X5 or Solar Pro 2?
Solar Pro 2 is the better all-round choice, scoring 51/100 against Palmyra X5 (47). It leads on price. Palmyra X5 wins on inputs & features 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, Palmyra X5 or Solar Pro 2?
Solar Pro 2 is cheaper at $0.25 input / $0.25 output per million tokens (official Upstage API price). Palmyra X5 costs $0.60 input / $6.00 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 $1.95 for Palmyra X5 (7.8× as much).
Which scores higher on benchmarks?
There is no independent benchmark that covers both models yet. Palmyra X5 has not been scored yet and Solar Pro 2 has not been scored yet.
Which is better for coding?
There are no published SWE-bench Verified results for Palmyra X5 and Solar Pro 2 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?
Palmyra X5 has the largest context window at 1,000,000 tokens, against 65,536 for Solar Pro 2. Maximum output per response: Palmyra X5 up to 8,192, Solar Pro 2 up to 8,192 tokens.
Which can read images, PDFs, audio or video?
Palmyra X5 accepts text and images; Solar Pro 2 accepts text. Palmyra X5 handles the widest range of inputs.
Are any of these open source?
No. Palmyra X5 and Solar Pro 2 are proprietary and only available through APIs and apps.
Which is newer?
Solar Pro 2 is the newest, released May 20, 2025. Palmyra X5 came out Apr 28, 2025. Knowledge cutoff: Solar Pro 2 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 Nov 2, 2026.
