Function Health vs Restream

Side-by-side comparison of AI visibility scores, market position, and capabilities

Function Health leads in AI visibility (46 vs 23)

Function Health

ChallengerDigital Health

Longevity & Preventive Health

Raised $298M Series B (Nov 2025) at $2.5B valuation. Largest-ever longevity raise. 160+ lab tests + full-body MRI. Medical Intelligence AI model launched.

AI VisibilityBeta
Overall Score
C46
Category Rank
#1 of 1
AI Consensus
67%
Trend
up
Per Platform
ChatGPT
52
Perplexity
43
Gemini
41

About

Function Health is a consumer preventive diagnostics company offering 160+ laboratory tests plus a $499 full-body MRI scan, all direct-to-consumer with AI-powered health intelligence layered on top. The company raised $298 million in Series B financing in November 2025 at a $2.5 billion valuation — the largest private fundraise in the longevity and preventive health space in history. The Medical Intelligence generative AI model, launched alongside the round, personalizes health guidance based on longitudinal biomarker data accumulated across repeat testing cycles.

Full profile

Restream

GrowthCreator Economy

Multi-Platform Live Streaming

Austin multi-streaming platform broadcasting live video to 30+ destinations including Twitch, YouTube, and Facebook Live simultaneously; trusted by creators, media companies, and businesses.

AI VisibilityBeta
Overall Score
D23
Category Rank
#1 of 1
AI Consensus
52%
Trend
up
Per Platform
ChatGPT
33
Perplexity
22
Gemini
31

About

Restream is an Austin-based live streaming company that provides multi-stream broadcasting technology enabling content creators, businesses, and media companies to broadcast live video simultaneously to over 30 streaming destinations including Twitch, YouTube, Facebook Live, LinkedIn Live, and custom RTMP destinations from a single source. The platform eliminates the need to choose a single streaming platform by enabling simultaneous multi-destination broadcasting, maximizing audience reach across wherever viewers are watching. Restream also provides a browser-based live studio for creating professional broadcasts without dedicated streaming hardware, including overlays, lower-thirds, guest invitations, and screen sharing. The company serves a broad range of users from gaming streamers and podcasters to corporate communications teams running product launches and all-hands meetings. Founded in 2015 in Kyiv with operations in Austin, Restream has grown to serve millions of streamers globally. The company raised over $50M from investors including Bessemer Venture Partners and competes with StreamYard, OBS, and Wirecast in the live streaming software market.

Full profile

AI Visibility Head-to-Head

46
Overall Score
23
#1
Category Rank
#1
67
AI Consensus
52
up
Trend
up
52
ChatGPT
33
43
Perplexity
22
41
Gemini
31
43
Claude
14
37
Grok
30

Capabilities & Ecosystem

Capabilities

Only Function Health
Longevity & Preventive Health
Only Restream
Multi-Platform Live Streaming

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