Ai2
Truly open breakthrough AI.
VS
Sonar by Perplexity
Real-time, web-grounded AI models and API for generative search.
Detailed comparison
Criteria
Ai2
Sonar by Perplexity
Pricing
Free
Freemium
Plans & pricing
Semantic Scholar: Free, AutoDiscovery (AstaLabs) Trial: Free, Olmo 2 32B Instruct API: Custom, Olmo 3 7B Think API: Custom, Olmo 3 7B Instruct API: Custom, Olmo 3 32B Think API: Custom, Olmo 3.1 32B Think API: Custom, Olmo 3.1 32B Instruct API: Custom
Free Plan (Standard): Free, Perplexity Pro (Individual): $17/mo, Perplexity Max (Individual): $167/mo, Education Pro: $5/mo, Perplexity Enterprise Pro: Custom, Perplexity Enterprise Max: Custom, Sonar API: $0.001/mo, Sonar Pro API: $0.003/mo
Free trial
Yes
Yes
Audience
b2b
b2c
Platforms
Web
Web
API
Yes
Yes
Open Source
Open Source
Proprietary
Categories
Data Science, Education
SEO, Data Science
Popularity
Very High
Very High
Description
Ai2, founded by Paul Allen and led by Ali Farhadi, is a non-profit research institute. It conducts high-impact research and engineering to tackle key ...
Sonar by Perplexity is a suite of advanced AI models and an API platform from Perplexity AI. It provides real-time, web-grounded AI responses with tra...
Pricing
Ai2
Free
Sonar by Perplexity
Freemium
Plans & pricing
Ai2
Semantic Scholar: Free, AutoDiscovery (AstaLabs) Trial: Free, Olmo 2 32B Instruct API: Custom, Olmo 3 7B Think API: Custom, Olmo 3 7B Instruct API: Custom, Olmo 3 32B Think API: Custom, Olmo 3.1 32B Think API: Custom, Olmo 3.1 32B Instruct API: Custom
Sonar by Perplexity
Free Plan (Standard): Free, Perplexity Pro (Individual): $17/mo, Perplexity Max (Individual): $167/mo, Education Pro: $5/mo, Perplexity Enterprise Pro: Custom, Perplexity Enterprise Max: Custom, Sonar API: $0.001/mo, Sonar Pro API: $0.003/mo
Free trial
Ai2
Yes
Sonar by Perplexity
Yes
Audience
Ai2
b2b
Sonar by Perplexity
b2c
Platforms
Ai2
Web
Sonar by Perplexity
Web
API
Ai2
Yes
Sonar by Perplexity
Yes
Open Source
Ai2
Open Source
Sonar by Perplexity
Proprietary
Categories
Ai2
Data Science, Education
Sonar by Perplexity
SEO, Data Science
Popularity
Ai2
Very High
Sonar by Perplexity
Very High
Description
Ai2
Ai2, founded by Paul Allen and led by Ali Farhadi, is a non-profit research institute. It conducts high-impact research and engineering to tackle key ...
Sonar by Perplexity
Sonar by Perplexity is a suite of advanced AI models and an API platform from Perplexity AI. It provides real-time, web-grounded AI responses with tra...
Features
Ai2
Open language models (OLMo)
Multimodal AI models
AI for science applications (Asta)
Semantic scientific search (Semantic Scholar)
AI for environmental applications (EarthRanger)
AI model evaluation frameworks
Sonar by Perplexity
Real-Time Web Search with Verified Citations
Chain-of-Thought Reasoning (Sonar Reasoning Pro)
OpenAI Client Compatible API
Flexible Sonar Models (Sonar, Sonar Pro, Sonar Deep Research)
Extended Context Windows for Complex Queries
High Performance and Answer Quality
Key differentiators
Ai2
- Non-profit AI research for common good
- Develops truly open AI models
- Specializes in AI for science & environment
Sonar by Perplexity
- Real-time web search with citations
- Flexible Sonar models
- OpenAI client compatible API
Other comparisons
FAQ: Ai2 vs Sonar by Perplexity
Ai2: Truly open breakthrough AI.. Sonar by Perplexity: Real-time, web-grounded AI models and API for generative search.. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. Ai2 is free and Sonar by Perplexity is freemium.
The best choice between Ai2 and Sonar by Perplexity depends on your specific needs. Compare their features, pricing, and target audience on this page to find the tool that best fits your use case.
Ai2 is primarily designed for individuals, while Sonar by Perplexity is built for individuals.
Ai2 offers: Open language models (OLMo), Multimodal AI models, AI for science applications (Asta), Semantic scientific search (Semantic Scholar). Sonar by Perplexity offers: Real-Time Web Search with Verified Citations, Chain-of-Thought Reasoning (Sonar Reasoning Pro), OpenAI Client Compatible API, Flexible Sonar Models (Sonar, Sonar Pro, Sonar Deep Research).
Based on our data, Ai2 currently enjoys greater popularity. However, popularity isn't the only factor — compare features to find the right tool for your needs.