Solar Pro vs InternVL 2.5 78B
Compare Solar Pro and InternVL 2.5 78B: pricing, performance, context window, latency, and best use cases. Side-by-side comparison on XALEN.
Updated 2026-05-21 · By Abhishek Raj · Our methodology
| Feature | Solar Pro | InternVL 2.5 78B |
|---|---|---|
| Category | Open Source | Vision |
| Parameters | 22B | 78B |
| Context Window | 32K | 128K |
| Input Price | $0.02/1M tokens | $0.05/1M tokens |
| Output Price | $0.04/1M tokens | $0.10/1M tokens |
| Latency | ~180ms | ~400ms |
Choose Solar Pro when:
- ✓ General purpose
- ✓ Korean content
- ✓ Chatbots
Good instruction following, Compact, Efficient
Choose InternVL 2.5 78B when:
- ✓ Document analysis
- ✓ Chart reading
- ✓ Visual Q&A
Strong visual reasoning, Open weights, Good OCR
Verdict: Solar Pro vs InternVL 2.5 78B
For cost efficiency, Solar Pro wins at $0.02/1M input tokens. For speed, Solar Pro is faster at ~180ms. Solar Pro excels at General purpose while InternVL 2.5 78B is better for Document analysis. Both are available on XALEN through a single API — try them in the Playground to see which fits your workload.
Detailed Analysis
Pricing Comparison
Solar Pro costs $0.02/1M input tokens and $0.04/1M output tokens. InternVL 2.5 78B costs $0.05 input and $0.10 output. Solar Pro is 2.5x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.
Performance & Context
Solar Pro has a 32K context window with ~180ms latency. InternVL 2.5 78B offers 128K context at ~400ms. InternVL 2.5 78B has the larger context window.
Best For
Solar Pro (Open Source) is optimized for: General purpose, Korean content, Chatbots. InternVL 2.5 78B (Vision) works best for: Document analysis, Chart reading, Visual Q&A.
Try Both on XALEN
Both models are available through XALEN's OpenAI-compatible API. Switch between them by changing the model parameter:
from xalen import XALEN
client = XALEN(api_key="xln_test_YOUR_KEY")
# Use Solar Pro
response_a = client.chat.completions.create(
model="solar-pro",
messages=[{"role": "user", "content": "Your question here"}]
)
# Use InternVL 2.5 78B
response_b = client.chat.completions.create(
model="internvl-2-5-78b",
messages=[{"role": "user", "content": "Your question here"}]
)Frequently Asked Questions
Which is better, Solar Pro or InternVL 2.5 78B?
Solar Pro (Open Source, 22B) offers Good instruction following. InternVL 2.5 78B (Vision, 78B) offers Strong visual reasoning. Choose Solar Pro for General purpose or InternVL 2.5 78B for Document analysis.
How much does Solar Pro cost vs InternVL 2.5 78B?
Solar Pro: $0.02/1M input, $0.04/1M output. InternVL 2.5 78B: $0.05/1M input, $0.10/1M output. Both available on XALEN with batch processing at 50% discount.
Can I use both models on XALEN?
Yes. XALEN provides 200+ models through a single OpenAI-compatible API. Switch between Solar Pro and InternVL 2.5 78B by changing the model parameter. No code changes needed.
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Last updated: 2026-05-21. Pricing and specifications may change. Check pricing page for latest rates.