MythoMax 13B vs InternVL 2.5 78B

Compare MythoMax 13B 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

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Feature MythoMax 13B InternVL 2.5 78B
CategoryOpen SourceVision
Parameters13B78B
Context Window4K128K
Input Price$0.01/1M tokens$0.05/1M tokens
Output Price$0.02/1M tokens$0.10/1M tokens
Latency~100ms~400ms

Choose MythoMax 13B when:

  • ✓ Story generation
  • ✓ Creative content
  • ✓ Interactive fiction
Key Strengths:

Creative writing, Roleplay, Narrative quality

Choose InternVL 2.5 78B when:

  • ✓ Document analysis
  • ✓ Chart reading
  • ✓ Visual Q&A
Key Strengths:

Strong visual reasoning, Open weights, Good OCR

Verdict: MythoMax 13B vs InternVL 2.5 78B

For cost efficiency, MythoMax 13B wins at $0.01/1M input tokens. For speed, MythoMax 13B is faster at ~100ms. MythoMax 13B excels at Story generation 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

MythoMax 13B costs $0.01/1M input tokens and $0.02/1M output tokens. InternVL 2.5 78B costs $0.05 input and $0.10 output. MythoMax 13B is 5.0x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.

Performance & Context

MythoMax 13B has a 4K context window with ~100ms latency. InternVL 2.5 78B offers 128K context at ~400ms. InternVL 2.5 78B has the larger context window.

Best For

MythoMax 13B (Open Source) is optimized for: Story generation, Creative content, Interactive fiction. 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 MythoMax 13B
response_a = client.chat.completions.create(
    model="mythomax-13b",
    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"}]
)

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, MythoMax 13B or InternVL 2.5 78B?

MythoMax 13B (Open Source, 13B) offers Creative writing. InternVL 2.5 78B (Vision, 78B) offers Strong visual reasoning. Choose MythoMax 13B for Story generation or InternVL 2.5 78B for Document analysis.

How much does MythoMax 13B cost vs InternVL 2.5 78B?

MythoMax 13B: $0.01/1M input, $0.02/1M 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 MythoMax 13B 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.