Mars5 TTS vs Dolphin 2.9.3 72B

Compare Mars5 TTS and Dolphin 2.9.3 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 Mars5 TTS Dolphin 2.9.3 72B
CategorySpeechOpen Source
ParametersGenerative72B
Context WindowN/A128K
Input Price$0.012/1K/1M tokens$0.04/1M tokens
Output PriceN/A/1M tokens$0.08/1M tokens
Latency~250ms~350ms

Choose Mars5 TTS when:

  • ✓ Custom voices
  • ✓ Audiobooks
  • ✓ Character voices
Key Strengths:

Voice cloning, Emotion control, Natural output

Choose Dolphin 2.9.3 72B when:

  • ✓ Creative writing
  • ✓ Unrestricted generation
  • ✓ Research
Key Strengths:

Uncensored, Strong instruction following, Versatile

Verdict: Mars5 TTS vs Dolphin 2.9.3 72B

For cost efficiency, Mars5 TTS wins at $0.012/1K/1M input tokens. For speed, Mars5 TTS is faster at ~250ms. Mars5 TTS excels at Custom voices while Dolphin 2.9.3 72B is better for Creative writing. Both are available on XALEN through a single API — try them in the Playground to see which fits your workload.

Detailed Analysis

Pricing Comparison

Mars5 TTS costs $0.012/1K/1M input tokens and N/A/1M output tokens. Dolphin 2.9.3 72B costs $0.04 input and $0.08 output. Mars5 TTS is 3.3x cheaper on input tokens. XALEN offers batch processing at 50% discount on both models.

Performance & Context

Mars5 TTS has a N/A context window with ~250ms latency. Dolphin 2.9.3 72B offers 128K context at ~350ms. Dolphin 2.9.3 72B has the larger context window.

Best For

Mars5 TTS (Speech) is optimized for: Custom voices, Audiobooks, Character voices. Dolphin 2.9.3 72B (Open Source) works best for: Creative writing, Unrestricted generation, 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 Mars5 TTS
response_a = client.chat.completions.create(
    model="mars5-tts",
    messages=[{"role": "user", "content": "Your question here"}]
)

# Use Dolphin 2.9.3 72B
response_b = client.chat.completions.create(
    model="dolphin-2-9-3-72b",
    messages=[{"role": "user", "content": "Your question here"}]
)

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Get API Key Try in Playground

Frequently Asked Questions

Which is better, Mars5 TTS or Dolphin 2.9.3 72B?

Mars5 TTS (Speech, Generative) offers Voice cloning. Dolphin 2.9.3 72B (Open Source, 72B) offers Uncensored. Choose Mars5 TTS for Custom voices or Dolphin 2.9.3 72B for Creative writing.

How much does Mars5 TTS cost vs Dolphin 2.9.3 72B?

Mars5 TTS: $0.012/1K/1M input, N/A/1M output. Dolphin 2.9.3 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 Mars5 TTS and Dolphin 2.9.3 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.