Who is Persimmon for?

Persimmon is a B2B product built for AI researchers and developers.

What platforms does Persimmon run on?

Persimmon runs on the web and API.

Is Persimmon still maintained?

Unverified. Persimmon has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to Persimmon?

Similar projects tracked by PulseGate include Bert Base Portuguese Cased, Bert Large Uncased Whole Word Masking Squad2, and Mbart Large 50 One To Many Mmt.

Who develops Persimmon?

Persimmon is developed by Humans&.

Does Persimmon have an API or integrations?

Yes — Persimmon exposes a public API.

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Persimmon

Name: Persimmon
Author: Humans&

humansand.aiInfrastructure

Persimmon is a research-preview model that simulates how people behave in multi-turn, multi-user chat settings. It models variation across individuals, social contexts, and time for AI research and interaction evaluation.

WebAPICloud-managed

Visit humansand.ai

Overview

9 features

In the Other models space, Persimmon takes a focused approach. It focuses on simulating realistic variation in human behavior for testing and evaluating AI interactions. It is built as a B2B product for AI researchers and developers. It ships for the web and API.

It is developed by Humans&. Key capabilities include human behavior simulation, multi-turn chat, and multi-user interactions. It exposes integrations via a public API.

Summary written by a language model from the project’s public pages.

Human behavior simulation
Multi-turn chat
Multi-user interactions
Behavior distribution matching
Temporal behavior modeling
User model evaluations
Playground access
API access
Model card

Built with & integrations

AI providers

meta_llamaopenai

Connectors

API

Runs on

BrowserAPI-onlyCloud-managed

Detected from

openai: bgpt- in the HTML
meta_llama: llama- in the HTML

Trust & compliance

Verified signals

HTTPS

Indexing history

What PulseGate has recorded for this listing

Indexed11 Sept · 23:04 UTC
Persimmon by Humans&: A model for simulating human interactions verified via Hacker News firehose (Algolia)
Source: Hacker News firehose (Algolia) · Open

Frequently asked questions about Persimmon

What does Persimmon do?: Persimmon focuses on simulating realistic variation in human behavior for testing and evaluating AI interactions. It is catalogued under Other models on PulseGate.
Who is Persimmon for?: Persimmon is a B2B product built for AI researchers and developers.
What platforms does Persimmon run on?: Persimmon runs on the web and API.
Is Persimmon still maintained?: Unverified. Persimmon has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to Persimmon?: Similar projects tracked by PulseGate include Bert Base Portuguese Cased, Bert Large Uncased Whole Word Masking Squad2, and Mbart Large 50 One To Many Mmt.Bert Base Portuguese Cased Bert Large Uncased Whole Word Masking Squad2 Mbart Large 50 One To Many Mmt
Who develops Persimmon?: Persimmon is developed by Humans&.
Does Persimmon have an API or integrations?: Yes — Persimmon exposes a public API.

At a glance

Platforms: Web
Languages: English
First seen: 11 Sept 2026
Built for: AI researchers and developers
Model: B2B
Solves: Simulating realistic variation in human behavior for testing and evaluating AI interactions.

Developer

Humans&

Index record

Indexed: 11 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 11 Sept 2026

Identity audit (13)

Slug: persimmon-by-humans-a-model-for-simulating-human-interact-humansand-ai
Lifecycle state recorded: 11 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 11 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 11 Sept 2026
Canonical URL: https://persimmon.humansand.ai/blog

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