ModelGuessr: Can you tell which AI you're chatting with?
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Hey HN - I built ModelGuessr, a game where you chat with a random AI model and try to guess which one it is.A big open question in AI is whether there's enough brand differentiation for AI companies to capture real profits. Will models end up commoditized like cloud compute, or differentiated like smartphones?I built ModelGuessr to test this. I think that people will struggle more than they expect. And the more model mix-ups there are, the more commodity-like these models probably are.If enough people play, I'll publish some follow-up analyses on confusion patterns (which models get mistaken for each other, what gives them away, etc.). Would love any feedback!
HN · launched Dec 15, 2025 · 6 upvotes (top 73%) · 0 views
Niche: online trivia quiz games · 163 launches, 18 in the last 7 days ▼ -25% · Explore this niche →
Category and tags
- Horizontal
- Observability & eval
- B2C
- AI-native
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 163 launches in online trivia quiz games →
Could you build this?
Yes It is a straightforward web guessing game that proxies prompts to standard LLM provider APIs (OpenAI, Anthropic, Google) and evaluates user guesses.
Discussion
2 comments analyzed.
Concerns raised: Page doesn't refresh after correct guess, allowing unintended model switching
Feature requests: Auto-refresh page after correct guess to start new round
Competitors
Other products that read as similar to this one : 506 launches clear the similarity bar, closest 8 shown.
Attention rank: #436 of 507 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 45 days after the earliest competitor.
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- Spec27 · hn · 2026-04-30 · 13 upvotes · similarity 0.44
- Parley · ph · 2026-09-19 · 1 upvotes · similarity 0.44
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