Comparison
| Tool | Price from | Free plan | Category |
|---|---|---|---|
| not listed | yes | APIs & models | |
| 0.02 USD | ? | APIs & models | |
| 5 USD/mo | yes | APIs & models | |
| 0.0048 USD/mo | trial | APIs & models | |
| not listed | ? | APIs & models | |
| 0.3 USD input / 1.2 USD output per M tokens | ? | APIs & models | |
| 5 USD | trial | APIs & models | |
| not listed | ? | APIs & models | |
| not listed | yes | APIs & models |
Each alternative in short
1. Grok API
Official SpaceXAI API for building apps with Grok models: text, image, video, voice, and tool calling, for developers.
The vendor does not state this clearly on the homepage or pricing page.
2. Cartesia
Real-time text-to-speech, speech-to-text and voice agent API for developers building fast, live voice conversations.
Yes, there is a free plan. Free plan: 20K credits per month, $1 prepaid agent dollars per month, access to Text to Speech and Speech to Text.
3. Deepgram
Enterprise voice AI APIs (speech-to-text, text-to-speech, voice agents) for developers and companies building real-time voice applications.
There is a free trial. Pay As You Go plan with a $200 free credit, no credit card required, no expiration.
4. AssemblyAI
Speech-to-text and speech understanding API models for developers building voice features into apps, agents and call tools.
The vendor does not state this clearly on the homepage or pricing page.
5. MiniMax
Multimodal AI models (LLM, video, speech, music) and AI-native products such as MiniMax Code, Design and Talkie, for developers, creators and enterprises.
The vendor does not state this clearly on the homepage or pricing page.
6. Cerebras
Ultra-fast AI inference on Cerebras wafer-scale hardware, for developers and enterprises running frontier models.
There is a free trial. One-time $5 promotional credit after adding a valid payment method, expiring 30 days after activation; no automatic charge.
7. Hume AI
Evaluation and improvement platform for voice AI: finds failing conversations, diagnoses causes and measures expression, for AI labs and enterprises.
The vendor does not state this clearly on the homepage or pricing page.
8. OpenRouter
A unified API and chat interface giving access to 500+ AI models from 80+ providers, for developers and teams who want one key and better uptime.
Yes, there is a free plan. Free plan: 25+ free models, 4 free providers, chat and API access, activity logs, 5 workspaces, 50 requests/day, community support.
FAQ
What is the best alternative to LocalAI?
The most popular option in the same category is Grok API. See the comparison table above.