kitio.aiOpenRouter vs Ultravox
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. OpenRouter starts at See pricing page and Ultravox starts at $100/mo. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Unified OpenAI-compatible API
- Automatic provider fallback
- Free model variants
- Bring your own key
- Usage rankings
- Speech-native model
- Real-time voice agents
- Outbound call scheduler
- Custom voices
- SIP support
| Feature | OpenRouter | Ultravox |
|---|---|---|
| Best for | One API and key for hundreds of models from dozens of providers | Speech-native voice AI platform for real-time voice agents |
| Category | Models & APIs | Models & APIs |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | $100/mo |
| Free plan | Yes | Yes |
| Made by | OpenRouter | Ultravox (Inworld) |
| Based in | United States | United States |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
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Pricing compared
OpenRouter starts at See pricing page and Ultravox starts at $100/mo. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Free
Free
- Free models with rate limits
- One API for many models
Pay-as-you-go
Per-token model pricing
- Buy credits
- Pay provider rates per model
Enterprise
Contact sales
- Volume pricing
- Dedicated support
3 plans
Pay as you go
$0.05 / minute
- 30 free minutes of calls
- Up to 5 concurrent calls
- Unlimited playground calls
Pro
$100/mo
- No hard concurrency caps
- Outbound call scheduler
- 5 custom voices
Enterprise
Custom
- Custom pricing
- Volume rates
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
OpenRouter
- Huge model choice with one key
- Easy model switching
- Built-in failover
- Small fee on credit purchases
- Provider quality varies
- Adds a middle layer for data
Ultravox
- Skips the speech-to-text step
- 30 free minutes to start
- Unlimited playground calls
- Developer-focused, not a no-code tool
- Pay-as-you-go plan limits concurrent calls to 5
- Now part of Inworld, so the roadmap may shift
Which one should you choose?
Choose OpenRouter if you want:
- Huge model choice with one key
- Easy model switching
- Built-in failover
Watch out: small fee on credit purchases.
Choose Ultravox if you want:
- Skips the speech-to-text step
- 30 free minutes to start
- Unlimited playground calls
Watch out: developer-focused, not a no-code tool.
OpenRouter vs Ultravox FAQ
What is the difference between OpenRouter and Ultravox?
OpenRouter: One API and key for hundreds of models from dozens of providers. Ultravox: Speech-native voice AI platform for real-time voice agents. Both are models & apis tools.
Is OpenRouter or Ultravox cheaper?
OpenRouter starts at See pricing page and Ultravox starts at $100/mo. Check both pricing pages for current plans.
Do OpenRouter and Ultravox have free plans?
OpenRouter: Yes. Ultravox: Yes.
Who makes OpenRouter?
OpenRouter is made by OpenRouter, based in United States.
Who makes Ultravox?
Ultravox is made by Ultravox (Inworld), based in United States.
Which should I choose, OpenRouter or Ultravox?
Choose OpenRouter if you value huge model choice with one key and easy model switching. Choose Ultravox if you value skips the speech-to-text step and 30 free minutes to start.