MythoMax 13B vs Molmo 72B

Compare MythoMax 13B and Molmo 72B: 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 Molmo 72B
CategoryOpen SourceVision
Parameters13B72B
Context Window4K128K
Input Price$0.01/1M tokens$0.04/1M tokens
Output Price$0.02/1M tokens$0.08/1M tokens
Latency~100ms~350ms

Choose MythoMax 13B when:

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

Creative writing, Roleplay, Narrative quality

Choose Molmo 72B when:

  • ✓ Visual grounding
  • ✓ Object detection
  • ✓ Research
Key Strengths:

Fully open, Good pointing/grounding, Transparent

Verdict: MythoMax 13B vs Molmo 72B

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 Molmo 72B is better for Visual grounding. 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. Molmo 72B costs $0.04 input and $0.08 output. MythoMax 13B is 4.0x 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. Molmo 72B offers 128K context at ~350ms. Molmo 72B has the larger context window.

Best For

MythoMax 13B (Open Source) is optimized for: Story generation, Creative content, Interactive fiction. Molmo 72B (Vision) works best for: Visual grounding, Object detection, Research.

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 Molmo 72B
response_b = client.chat.completions.create(
    model="molmo-72b",
    messages=[{"role": "user", "content": "Your question here"}]
)

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Frequently Asked Questions

Which is better, MythoMax 13B or Molmo 72B?

MythoMax 13B (Open Source, 13B) offers Creative writing. Molmo 72B (Vision, 72B) offers Fully open. Choose MythoMax 13B for Story generation or Molmo 72B for Visual grounding.

How much does MythoMax 13B cost vs Molmo 72B?

MythoMax 13B: $0.01/1M input, $0.02/1M output. Molmo 72B: $0.04/1M input, $0.08/1M 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 Molmo 72B 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.