Mistral Small 3.1 vs InternVL 2.5 78B

Compare Mistral Small 3.1 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 Mistral Small 3.1 InternVL 2.5 78B
CategoryCompactVision
Parameters24B78B
Context Window128K128K
Input Price$0.02/1M tokens$0.05/1M tokens
Output Price$0.04/1M tokens$0.10/1M tokens
Latency~120ms~400ms

Choose Mistral Small 3.1 when:

  • ✓ Lightweight tasks
  • ✓ Classification
  • ✓ Simple generation
Key Strengths:

128K context, Low cost, Fast

Choose InternVL 2.5 78B when:

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

Strong visual reasoning, Open weights, Good OCR

Verdict: Mistral Small 3.1 vs InternVL 2.5 78B

For cost efficiency, Mistral Small 3.1 wins at $0.02/1M input tokens. For speed, Mistral Small 3.1 is faster at ~120ms. Mistral Small 3.1 excels at Lightweight tasks 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

Mistral Small 3.1 costs $0.02/1M input tokens and $0.04/1M output tokens. InternVL 2.5 78B costs $0.05 input and $0.10 output. Mistral Small 3.1 is 2.5x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.

Performance & Context

Mistral Small 3.1 has a 128K context window with ~120ms latency. InternVL 2.5 78B offers 128K context at ~400ms. Both have identical context windows.

Best For

Mistral Small 3.1 (Compact) is optimized for: Lightweight tasks, Classification, Simple generation. 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 Mistral Small 3.1
response_a = client.chat.completions.create(
    model="mistral-small-3-1",
    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

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Get API Key Try in Playground

Frequently Asked Questions

Which is better, Mistral Small 3.1 or InternVL 2.5 78B?

Mistral Small 3.1 (Compact, 24B) offers 128K context. InternVL 2.5 78B (Vision, 78B) offers Strong visual reasoning. Choose Mistral Small 3.1 for Lightweight tasks or InternVL 2.5 78B for Document analysis.

How much does Mistral Small 3.1 cost vs InternVL 2.5 78B?

Mistral Small 3.1: $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 Mistral Small 3.1 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.