Superagent vs Ultravox
A detailed comparison to help you choose between Superagent and Ultravox.
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Verdict: Ultravox wins
Ultravox scores 3.8/5, edging out Superagent at 3.4/5. Engineering teams building latency-sensitive voice agents who want a speech-native conversation layer with clean APIs rather than a stitched cascade.
Superagent Open-source framework for building and deploying AI agents | Ultravox Real-time, speech-native voice AI | |
|---|---|---|
| Rating | 3.4 (1 review) | 3.8 (1 review) |
| Pricing Model | freemium | paid |
| Starting Price | Free tier available | From $49/mo |
| Best For | Teams running AI coding agents and agent pipelines in production who want cheap continuous scanning plus an MCP loop their agents can consume. | Engineering teams building latency-sensitive voice agents who want a speech-native conversation layer with clean APIs rather than a stitched cascade. |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | open sourceapi accessbyok | team featuresapi access |
| Visit Superagent → | Visit Ultravox → |
Superagent
Pros
- + PR scans at 1 credit each are cheap enough for continuous scanning on any paid tier
- + MCP-native loop worked in my test: a coding agent pulled findings and returned a structured report
- + Context Guardrails scores agent-consumed material against repo poisoning and malicious instructions — a category most scanners ignore
- + Every plan includes every product and unlimited seats; no per-seat tax
- + Unlimited free usage on public open-source repositories
Cons
- - Price cliff: 100 free credits then $499/month for 500 on private repos — nothing in between
- - Red Team reports cost 500 credits, so a Starter plan buys one report per month and no scanning headroom
- - The product changed category from agent framework to security platform; stale listings are materially wrong
- - Early customer base and community-weighted support outside enterprise agreements
- - Security effectiveness claims are vendor-published and need validation against your own threat model
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
Frequently Asked Questions
Which is better, Superagent or Ultravox?▼
Ultravox scores higher at 3.8/5 vs 3.4/5 for Superagent, making it the better-rated option in our comparison.
What is the difference between Superagent and Ultravox?▼
Superagent: Build, manage, and deploy AI agents with a unified framework. Handles agent orchestration, memory, tools, and integrations for developers and teams. Ultravox: Ultravox, formerly Fixie, is a real-time voice AI infrastructure layer for building fast, natural-sounding voice agents.
Is Superagent or Ultravox more affordable?▼
Superagent starts at €0/mo, Ultravox starts at €49/mo. Check the comparison table above for current pricing.
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