Ai2
Truly open AI
VS
Sonar by Perplexity
Perplexity's AI model for fast, factual, web-grounded generative search.
Popularity
Ai28,130
Sonar by Per...8,234
Pricing
FreemiumAi2
FreemiumSonar by P...
Features
5
Ai2
vs
4
Sonar by P...
Our verdict
Ai2 is more geared toward b2b users, while Sonar by Perplexity targets b2c.
Detailed comparison
Criteria
Ai2
Sonar by Perplexity
Pricing
Freemium
Freemium
Plans & pricing
Freemium: Free
Free Plan: Free, Perplexity Pro: $17/mo, Perplexity Max: $200/mo, Perplexity Education Pro: $10/mo, Perplexity Enterprise Pro: Custom, Perplexity Enterprise Max: Custom, Sonar API: Custom, Comet Plus: $5/mo
Free trial
Yes
No
Audience
b2b
b2c
Platforms
Web, Ios, Api, Cli
Web, Ios, Android, Desktop, Api
API
Yes
Yes
Open Source
Open Source
Proprietary
Integrations
Appen, Google-cloud, Vertex-ai, Openrouter, Puter.js, Mujo.co, Maniskill, Nvidia-isaac-lab, Nvidia-isaac-sim, Semantic-scholar-api, Github, Allen-sdk, Brain-modeling-toolkit, Allen-brain-atlas-api, Peer-review-api
Openai-compatible client libraries, Native sdks, Langchain, Copy ai, Doximity, Zoom, Puter.js, Claude desktop
Categories
Data Science, Education
SEO, Data Science
Popularity
Very High
Very High
Description
Ai2 conducts high-impact research and engineering to tackle key problems in artificial intelligence, focusing on developing truly open AI models and applications. It offers various tools and projects, including Olmo, Asta, and Semantic Scholar. Ai2 is founded by Paul Allen and led by Ali Farhadi. The platform provides a range of features for AI development and research.
Sonar is Perplexity AI's proprietary large language model, optimized for answer quality, factuality, and speed. It powers Perplexity's AI search engine by synthesizing real-time web information with transparent citations. Sonar is designed to deliver accurate, readable answers by actively querying the web and grounding responses in verified sources.
Pricing
Ai2
Freemium
Sonar by Perplexity
Freemium
Plans & pricing
Ai2
Freemium: Free
Sonar by Perplexity
Free Plan: Free, Perplexity Pro: $17/mo, Perplexity Max: $200/mo, Perplexity Education Pro: $10/mo, Perplexity Enterprise Pro: Custom, Perplexity Enterprise Max: Custom, Sonar API: Custom, Comet Plus: $5/mo
Free trial
Ai2
Yes
Sonar by Perplexity
No
Audience
Ai2
b2b
Sonar by Perplexity
b2c
Platforms
Ai2
Web, Ios, Api, Cli
Sonar by Perplexity
Web, Ios, Android, Desktop, Api
API
Ai2
Yes
Sonar by Perplexity
Yes
Open Source
Ai2
Open Source
Sonar by Perplexity
Proprietary
Integrations
Ai2
Appen, Google-cloud, Vertex-ai, Openrouter, Puter.js, Mujo.co, Maniskill, Nvidia-isaac-lab, Nvidia-isaac-sim, Semantic-scholar-api, Github, Allen-sdk, Brain-modeling-toolkit, Allen-brain-atlas-api, Peer-review-api
Sonar by Perplexity
Openai-compatible client libraries, Native sdks, Langchain, Copy ai, Doximity, Zoom, Puter.js, Claude desktop
Categories
Ai2
Data Science, Education
Sonar by Perplexity
SEO, Data Science
Popularity
Ai2
Very High
Sonar by Perplexity
Very High
Description
Ai2
Ai2 conducts high-impact research and engineering to tackle key problems in artificial intelligence, focusing on developing truly open AI models and applications. It offers various tools and projects, including Olmo, Asta, and Semantic Scholar. Ai2 is founded by Paul Allen and led by Ali Farhadi. The platform provides a range of features for AI development and research.
Sonar by Perplexity
Sonar is Perplexity AI's proprietary large language model, optimized for answer quality, factuality, and speed. It powers Perplexity's AI search engine by synthesizing real-time web information with transparent citations. Sonar is designed to deliver accurate, readable answers by actively querying the web and grounding responses in verified sources.
Features
Ai2
Open language models (Olmo)
Multimodal models
Evaluation frameworks
AI for science applications (Asta)
Semantic Scholar
Sonar by Perplexity
Real-time web search with verified citations
Optimized for answer quality, factuality, and speed
API access for developers and enterprises
Supports multiple search modes (High, Medium, Low)
Key differentiators
Ai2
- Commitment to Open Science & Models
- AI for the Common Good
- High-Impact Research & Breakthroughs
- Foundational AI Technologies
- Interdisciplinary Collaboration
Sonar by Perplexity
- Real-time web search with citations
- Enhanced factuality and accuracy
- Speed and performance
- Direct answers over listed results
- Developer-friendly API
Other comparisons
FAQ: Ai2 vs Sonar by Perplexity
Ai2: Truly open AI. Sonar by Perplexity: Perplexity's AI model for fast, factual, web-grounded generative search.. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. Ai2 is freemium 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 models, Evaluation frameworks, AI for science applications (Asta). Sonar by Perplexity offers: Real-time web search with verified citations, Optimized for answer quality, factuality, and speed, API access for developers and enterprises, Supports multiple search modes (High, Medium, Low).
Based on our data, Sonar by Perplexity currently enjoys greater popularity. However, popularity isn't the only factor — compare features to find the right tool for your needs.
Ai2 offers a free trial, but Sonar by Perplexity does not.
Ai2 is open source, while Sonar by Perplexity is proprietary. Open source tools offer more transparency and customization options.
Ai2 offers 15 integrations (appen, google-cloud, vertex-ai, openrouter, puter.js...) compared to 8 for Sonar by Perplexity.
Ai2 is available on Web, Ios, Api, Cli. Sonar by Perplexity is available on Web, Ios, Android, Desktop, Api.