Ultravox Realtime measured on 2 of 34 Realtime benchmarks2
BenchmarkByScoreRank
No benchmark matches
Alternatives?
ModelScoreCostPriceWhat changes
BetterGrok Voice 3.0×24.5+60%$0.08Languages: loses es, pt, ar +27+1BetterGrok Voice 2.0unstated×22.1+60%$0.08Languages: not verified+1
BetterGemini 3.8 Live×30.5——Per audio minute: not verifiedBetterGemini 3.8 Live Extended Thinkingminimal×27.3——Per audio minute: not verified
BetterGPT Realtime 2.1unstated×21.2——Languages: not verified+1ModelScoreCostPriceWhat changes
Nothing here yet.
ModelScoreCostPriceWhat changes
Grok Voice 3.0×24.5+60%$0.08Languages: loses es, pt, ar +27+1Grok Voice 2.0unstated×22.1+60%$0.08Languages: not verified+1Gemini 3.8 Live×30.5——Per audio minute: not verifiedGemini 3.8 Live Extended Thinkingminimal×27.3——Per audio minute: not verifiedGPT Realtime 2.1unstated×21.2——Languages: not verified+1ModelScoreCostPriceWhat changes
Nothing here yet.
Run it yourself
estimateFits on✓ 8 GB (phone, laptop) · full quality✓ 16 GB · full quality✓ 24 GB GPU · full quality✓ 48 GB GPU · full quality✓ 80 GB GPU · full quality
LicenceMITfree for commercial use
Benchmarks
in Speech & VoiceEVA-Bench · EVA-A accuracy pass27#10
EVA-Bench · EVA-X experience pass2.9#12
FAQ
How much does Ultravox Realtime cost?›
$0.05 per minute.
Is Ultravox Realtime free to use?›
There is no free API; it costs $0.05 per minute. The weights are open, so you can run it yourself.
How good is Ultravox Realtime, and what is it best at?›
#10 of 12 in Realtime.
Is Ultravox Realtime better than GPT Realtime 2.1 Mini?›
On EVA-Bench · EVA-X experience pass, Ultravox Realtime scores 2.9 vs 29.2 — lower.
When was Ultravox Realtime released? Is there a newer version?›
Released 2025-12-02. It is the current version in its line.
Is Ultravox Realtime open source?›
Yes, the weights are open (MIT licence).
Can I run Ultravox Realtime locally?›
The weights are open and can be self-hosted; hardware needs are not confirmed yet.
What is Ultravox Realtime?›
Ultravox Realtime is an open-weights speech & voice model from Ultravox, released Dec 2025.
What are the best alternatives to Ultravox Realtime?›
Grok Voice 3.0 (better).