Ultravox vs Chatbase
A detailed comparison to help you choose between Ultravox and Chatbase.
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Verdict: Chatbase wins
Chatbase scores 4.1/5, edging out Ultravox at 3.8/5. Small and mid-size teams that want a grounded, multi-channel AI support agent with human handoff live quickly, and whose reply volume fits inside a credit pool they can model in advance.
Ultravox Real-time, speech-native voice AI | Chatbase Create custom AI chatbots from your data | |
|---|---|---|
| Rating | 3.8 (1 review) | 4.1 (1 review) |
| Pricing Model | paid | freemium |
| Starting Price | From $49/mo | Free tier available |
| Best For | Engineering teams building latency-sensitive voice agents who want a speech-native conversation layer with clean APIs rather than a stitched cascade. | Small and mid-size teams that want a grounded, multi-channel AI support agent with human handoff live quickly, and whose reply volume fits inside a credit pool they can model in advance. |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | team featuresapi access | api accessfree tierno code |
| Visit Ultravox → | Visit Chatbase → |
Ultravox
Pros
- + Speech-native model handled interruptions and overlaps without the cascade failure I have seen in STT/LLM/TTS stacks
- + Mid-call tool execution in my test paused and resumed speech without dead-air gaps
- + Transparent metered pricing: 30 free minutes then $0.05/min, verified by third-party price tracking in August 2026
- + Open model weights (fixie-ai/ultravox) allow self-hosting for teams that need model-level control
- + RAG corpora and custom voices are configuration steps, not build steps
Cons
- - Acquired by Inworld AI on 1 October 2026 — continuity is promised but the roadmap is unwritten
- - No free plan beyond the 30-minute allowance; sustained experimentation is paid
- - Developer-only product: no visual agent studio, no templates for non-engineers
- - Pay-as-you-go caps at 5 concurrent calls, which queued my parallel test calls
- - The hosted platform (scheduler, telephony, voice management) is where the value sits, so open weights are not a free substitute
Chatbase
Pros
- + Grounding is disciplined: in my 20-question test, 17 answers carried the right source and the unanswerable ones refused instead of inventing
- + Procedures run actions written in plain language — my mock order-lookup test needed no prompt engineering to trigger correctly
- + One agent covers web widget, WhatsApp, Messenger, Instagram, Slack, email, voice and telephony, with transcripts carried into helpdesk handoff
- + Model playground exposes Claude, Gemini, GPT, DeepSeek, Grok and Kimi so you can trade quality against credit cost per reply
- + Security posture is documented and audited: SOC 2 Type II, HIPAA-eligible Enterprise tier, GDPR compliance stated on the pricing page
Cons
- - Credit burn is model-dependent: the same scripted conversation cost me about 3x more credits on a Claude Sonnet-class model than the default
- - Removing the 'Powered by Chatbase' badge costs $99/month below Enterprise, so a clean-branded widget starts at $131/month, not $32
- - Exactly one AI agent per self-serve plan; a second bot is an add-on even on Pro
- - Free tier deletes your agent after 14 days of inactivity and gives only 50 credits — it is a sandbox, not a plan
- - No self-hosting, no code export, no bring-your-own model keys: you are fully rented into their stack
Frequently Asked Questions
Which is better, Ultravox or Chatbase?▼
Chatbase scores higher at 4.1/5 vs 3.8/5 for Ultravox, making it the better-rated option in our comparison.
What is the difference between Ultravox and Chatbase?▼
Ultravox: Ultravox, formerly Fixie, is a real-time voice AI infrastructure layer for building fast, natural-sounding voice agents. Chatbase: Chatbase allows you to create AI-powered chatbots trained on your specific data to handle customer queries automatically and efficiently.
Is Ultravox or Chatbase more affordable?▼
Ultravox starts at €49/mo, Chatbase starts at €0/mo. Check the comparison table above for current pricing.
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