Predict public opinion, community reaction & reputation
Simulate how a community, audience, or public reacts to an announcement — across Reddit-, X-, and forum-like agents.
MiroFish predicts public opinion by simulating a crowd of AI agents — each with a personality, memory, and social behavior — reacting to your scenario inside a simulated social environment. You get the most-likely sentiment, how it spreads and splits across sub-communities, the loudest objections, and the flashpoints to avoid. It is the hosted, no-install way to run the open-source MiroFish swarm-intelligence engine.
Why this is hard to predict
Communities are complex systems: mild individual preferences can cascade into dramatic collective outcomes that no single expert predicts. Whether it’s a policy, a paid-mods announcement, or a brand statement, the risk is a reaction chain you didn’t see coming. Simulating the crowd surfaces it first.
How MiroFish predicts it
- 1
Describe the scenario
The announcement or event, the communities involved (subreddits, X, forums), and the time horizon.
- 2
Cast the crowd
Agents are generated for each stakeholder group — loyalists, critics, creators, press — with distinct incentives.
- 3
Simulate the discourse
Agents post, reply, and shift positions over rounds; coalitions and pile-ons emerge the way they do in real communities.
- 4
Read the sentiment report
Most-likely sentiment, how it splits by community, key objections, escalation risks, and a recommended response.
Example prompt
What you get
- Most-likely sentiment and how confident the simulation is
- How opinion splits across sub-communities
- The loudest objections and who raises them
- Escalation / pile-on risks to pre-empt
- A recommended response and timing
Frequently asked questions
Can AI predict public opinion?
No system predicts opinion with certainty, but a multi-agent simulation can systematically explore how a specific announcement is likely to be received, assign rough probabilities, and surface reaction chains humans overlook — materially better than guessing, and materially less than prophecy.
Which platforms does it simulate?
MiroFish simulates social environments modeled on Twitter/X-like and Reddit-like platforms, with agents that post, comment, follow, repost, and debate — the same swarm engine behind the open-source project, hosted so you can run it in the browser.
Is my scenario private?
Yes. Your scenarios and reports are private to your account and are never shared with other users.
Want the full method? Read the deep-dive: on the MiroFish blog →
Run it on your own scenario
No install, no API keys. Credit packs from $2.99 — results in minutes, credits never expire.
Start predicting