GPT-4o vs Solar Pro

Compare GPT-4o and Solar Pro: pricing, performance, context window, latency, and best use cases. Side-by-side comparison on XALEN.

Updated 2026-05-21 · By Abhishek Raj · Our methodology

All OpenAI models All Upstage models What is an LLM API? Python Quickstart What is inference?
Feature GPT-4o Solar Pro
CategoryFrontierOpen Source
Parameters~1T22B
Context Window128K32K
Input Price$0.05/1M tokens$0.02/1M tokens
Output Price$0.15/1M tokens$0.04/1M tokens
Latency~400ms~180ms

Choose GPT-4o when:

  • ✓ Chart image analysis
  • ✓ Multimodal Q&A
  • ✓ Content generation
Key Strengths:

Multimodal, Fast for frontier, Strong reasoning

Choose Solar Pro when:

  • ✓ General purpose
  • ✓ Korean content
  • ✓ Chatbots
Key Strengths:

Good instruction following, Compact, Efficient

Verdict: GPT-4o vs Solar Pro

For cost efficiency, Solar Pro wins at $0.02/1M input tokens. For speed, Solar Pro is faster at ~180ms. GPT-4o excels at Chart image analysis while Solar Pro is better for General purpose. Both are available on XALEN through a single API — try them in the Playground to see which fits your workload.

Detailed Analysis

Pricing Comparison

GPT-4o costs $0.05/1M input tokens and $0.15/1M output tokens. Solar Pro costs $0.02 input and $0.04 output. Solar Pro is 2.5x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.

Performance & Context

GPT-4o has a 128K context window with ~400ms latency. Solar Pro offers 32K context at ~180ms. GPT-4o has the larger context window.

Best For

GPT-4o (Frontier) is optimized for: Chart image analysis, Multimodal Q&A, Content generation. Solar Pro (Open Source) works best for: General purpose, Korean content, Chatbots.

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 GPT-4o
response_a = client.chat.completions.create(
    model="gpt-4o",
    messages=[{"role": "user", "content": "Your question here"}]
)

# Use Solar Pro
response_b = client.chat.completions.create(
    model="solar-pro",
    messages=[{"role": "user", "content": "Your question here"}]
)

Start Building with XALEN

200+ AI models. One API. Pay-as-you-go.

Get API Key Try in Playground

Frequently Asked Questions

Which is better, GPT-4o or Solar Pro?

GPT-4o (Frontier, ~1T) offers Multimodal. Solar Pro (Open Source, 22B) offers Good instruction following. Choose GPT-4o for Chart image analysis or Solar Pro for General purpose.

How much does GPT-4o cost vs Solar Pro?

GPT-4o: $0.05/1M input, $0.15/1M output. Solar Pro: $0.02/1M input, $0.04/1M 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 GPT-4o and Solar Pro by changing the model parameter. No code changes needed.

Related Comparisons

GPT-4o vs GPT-4.1 GPT-4o vs GPT-4.1 Mini GPT-4o vs Claude Opus 4 GPT-4o vs Claude Sonnet 4 GPT-4o vs Claude Opus 4.5 GPT-4o vs Claude Sonnet 4.5

Last updated: 2026-05-21. Pricing and specifications may change. Check pricing page for latest rates.