# nat/openplayground

An LLM playground you can run on your laptop

Repository: https://github.com/nat/openplayground
Canonical: https://ross.abutalabs.com/products/openplayground
Language: TypeScript
License: MIT
License Family: permissive
Last push: 2026-02-06T04:56:49+00:00

## Health v2 (maintenance only)
Score: 60/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 66, release rhythm 35, longevity 91
- inputs: {"age_days": 1284, "days_push": 208, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6351, forks 483 (observed 2026-08-28T04:09:42.752856+00:00)

## What it is
A self-hosted LLM playground that runs on your laptop, providing a web UI for prompting models from OpenAI, Anthropic, Cohere, HuggingFace, llama.cpp, and other providers. It supports side-by-side model comparison, parameter tuning, prompt history, and automatic detection of locally cached models.

## Use cases
- compare LLM outputs side-by-side with the same prompt
- run a local playground UI for testing prompts against multiple providers
- tune model parameters and retry prompts with different settings
- run open-source models locally via llama.cpp or HuggingFace cache
- self-host an alternative to hosted LLM playgrounds like nat.dev

## When to choose
- you want a self-hosted playground UI without paying for a hosted service
- you need to compare responses across multiple LLM providers in one interface
- you want to experiment with local models on your own machine

## When to avoid
- you need a production chatbot or end-user-facing chat application
- you only use a single provider and its native playground suffices
- you need multimodal inputs or advanced chat features, which are not yet implemented

## Facets
- artifact type: application
- maturity: maintenance
- function: llm-inference, chat-interface, developer-tools, prompt-engineering
- domain: large-language-models, artificial-intelligence, developer-tools, self-hosted
- platform: self-hosted, python, cross-platform
- tags: llm-playground, model-comparison, local-inference, llama-cpp, openai, anthropic, parameter-tuning, docker, web-server

## Member repositories
- nat/openplayground (main) score 60

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:42.752856+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:46:06.318095+00:00, confidence not recorded.
  - readme: https://github.com/nat/openplayground (fetched 2026-08-28T04:09:42.752856+00:00, sha 453a46e39fc5)
- Data as of 2026-08-30T08:39:29.467469+00:00.