20+ Best Alternatives to Thesis in 2026
Automate AI research
Looking for an alternative to Thesis? Below are 20 AI startups working in the same space — ranked by our Neuron score so the most credible options come first. Each card shows what makes the tool a viable substitute, pricing signals, and funding stage.
- 1View alternative →
Perplexity
$2.0BAI-powered answer engine delivering real-time, cited responses to complex queries.
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 2View alternative →
Jina AI
$37.5MSearch foundation models: embeddings, rerankers, and a web reader API
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 3View alternative →
Raycast
$47MThe extensible AI launcher that puts every app, command, and model a keystroke away
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free · From $8/mo
- 4View alternative →
Onyx
$10MOnyx, formerly Danswer, is an open-source enterprise AI search and assistant that connects to
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 5View alternative →
Vetted
$15MAI shopping research agent that reads Reddit, reviews, and experts so you don't have to
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 6View alternative →
Profound
$151MAI search visibility platform for Answer Engine Optimization across ChatGPT and Perplexity
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 7View alternative →
Particle
$15.3MAI-powered news reader from ex-Twitter leaders that summarizes every side of a story
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 8View alternative →
Andi
$2.5MAd-free, private AI search that answers questions like a friend, not a list of links
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 9View alternative →
Sumble
$38.5MAI-powered knowledge-graph platform that maps which technologies, projects, and people exist
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 10View alternative →
Semrush
UndisclosedAI-powered online visibility and marketing platform for SEO, content, and ads
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free · From $139/mo
- 11View alternative →
OpenEvidence
$735MAI medical assistant for clinicians
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 12View alternative →
Mixedbread
$860KMultimodal retrieval and search platform for AI agents
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 13View alternative →
Liner
$33MSeoul-based AI search company building a trustworthy answer engine for students, researchers
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 14View alternative →
Serafis
$500KNarrative intelligence and search for institutional investors
Why it's similar: Shares categories with Thesis — AI Search.
💵 Custom
- 15View alternative →
Consensus
UndisclosedAI search engine that answers research questions from 220M+ peer-reviewed papers
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 16View alternative →
Undermind
UndisclosedAI agent that runs exhaustive literature searches across scientific papers
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free · From $15/mo
- 17View alternative →
Bluefish
$68MAgentic marketing platform to influence how brands appear in AI
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
- 18View alternative →
You.com
$175MThe productivity search engine with AI agents.
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free trial · From $15/mo
- 19View alternative →
Parallel
$230MWeb search and research API purpose-built for AI agents
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free trial
- 20View alternative →
Coactive AI
$44MMultimodal AI that makes video and images searchable
Why it's similar: Shares categories with Thesis — AI Search.
💵 Free
Frequently asked questions
What are the best alternatives to Thesis?
The top-ranked alternatives to Thesis on NeuronFeed are Perplexity, Jina AI, Raycast, Onyx, Vetted. Rankings are based on our Neuron score, which weighs funding, momentum and editorial signal.
Is there a free alternative to Thesis?
Yes — Perplexity, Jina AI, Raycast offer a free plans. See the pricing column for each alternative above.
How is this list ranked?
We rank alternatives by shared categories with Thesis, then by our proprietary Neuron score (0–100) which combines funding, team quality, momentum, and editorial input. The list refreshes every 30 days.
Thesis vs Perplexity — which is better?
It depends on use case. Perplexity (AI-powered answer engine delivering real-time, cited responses to complex queries.) is the #1-ranked alternative. See the full side-by-side at /compare/thesis-vs-perplexity.
Explore more around Thesis
Contextual paths to related AI startups, deals and rankings.