InternVL 2.5 78B vs Molmo 72B

Compare InternVL 2.5 78B 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 InternVL 2.5 78B Molmo 72B
CategoryVisionVision
Parameters78B72B
Context Window128K128K
Input Price$0.05/1M tokens$0.04/1M tokens
Output Price$0.10/1M tokens$0.08/1M tokens
Latency~400ms~350ms

Choose InternVL 2.5 78B when:

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

Strong visual reasoning, Open weights, Good OCR

Choose Molmo 72B when:

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

Fully open, Good pointing/grounding, Transparent

Verdict: InternVL 2.5 78B vs Molmo 72B

For cost efficiency, Molmo 72B wins at $0.04/1M input tokens. For speed, Molmo 72B is faster at ~350ms. InternVL 2.5 78B excels at Document analysis 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

InternVL 2.5 78B costs $0.05/1M input tokens and $0.10/1M output tokens. Molmo 72B costs $0.04 input and $0.08 output. Molmo 72B is 1.3x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.

Performance & Context

InternVL 2.5 78B has a 128K context window with ~400ms latency. Molmo 72B offers 128K context at ~350ms. Both have identical context windows.

Best For

InternVL 2.5 78B (Vision) is optimized for: Document analysis, Chart reading, Visual Q&A. 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 InternVL 2.5 78B
response_a = client.chat.completions.create(
    model="internvl-2-5-78b",
    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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Get API Key Try in Playground

Frequently Asked Questions

Which is better, InternVL 2.5 78B or Molmo 72B?

InternVL 2.5 78B (Vision, 78B) offers Strong visual reasoning. Molmo 72B (Vision, 72B) offers Fully open. Choose InternVL 2.5 78B for Document analysis or Molmo 72B for Visual grounding.

How much does InternVL 2.5 78B cost vs Molmo 72B?

InternVL 2.5 78B: $0.05/1M input, $0.10/1M 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 InternVL 2.5 78B 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.