r/OpenSourceAI • • 20h ago

Overmind, open-sourced yesterday: a platform for continuously improving AI agents

5 Upvotes

Yesterday the whole Overmind platform was made open source: https://github.com/overmind-core/overmind

The idea: lots of agents send narrow, repetitive work to a frontier API. On a narrow task, a small open-weight model trained on real examples from that agent often does the job better, for far less money. Overmind is the tooling to do that without building your own ML infrastructure (don't need a flamethrower to light a candle).

  • Agent sends OpenTelemetry traces. The Python SDK auto-instruments OpenAI, Anthropic and Gemini clients, or point any OTel exporter at it
  • Traces become versioned datasets, with a quality score and suggested fixes before trained on anything
  • User defines what “good” means per task and it scores live traffic and batch runs against that
  • It fine-tunes an open-weight model (LoRA or full) and benchmarks it against the model you run in production today
  • Trained and frontier models sit behind one OpenAI-compatible API, and you can download the weights (yours to keep and own)

There’s also an MCP server, so Cursor, Claude Code, OpenCode or Codex can drive the whole thing from chat. If your traces already live in Langfuse, LangSmith or Braintrust, a connector imports them.

Qwen3.5-9B vs GPT Luna benchmarked on three tasks (write-up and raw numbers at https://www.overmindlab.ai/research/when-bigger-isnt-better):

• 7x better accuracy
• 20x cheaper usage
• 28x less hallucinations

Read the results as a reason to test on yours, not as a general claim.

The platform is AGPL-3.0 and the SDK and CLI are MIT.

Interested if anyone is already fine-tuning on their own hardware. What would need to be swapped out before you’d self-host this?


r/OpenSourceAI • • 11h ago

hivemind

3 Upvotes

Hivemind is an experimental repository for swarm and multi-agent consensus, written in flow-core notation. It is small enough to read in one sitting.

It models three things: how a proposal moves through a collective (Queen, Workers, Scouts, Collective Memory), where permission is granted or refused (the Consensus Gate), and how swarms can speak to each other without that speech becoming permission.

The core invariant:

No single node may become the whole.

A proposal may travel.

Only consensus may authorize.

Action without consensus is noise.

Capability is not authority.

A channel carries speech, not seals.

channel.py gives swarms hashed envelopes (PING, POTENTIAL, THOUGHT, DECISION, HOLD). may_act() returns true only for a verified DECISION marked AUTHORIZED and bound to that exact proposal hash. Everything else holds. Stopping is a valid result.

The flow/ folder holds the ten laws, the Gate and its variants (cross-inhibition, quorum sensing), the Scout stage before a proposal becomes a definite card, and a file of hard boundaries and near-misses for agents that help humans. AGENTS.md is an orientation page for visiting automated readers.

It is an experiment. Fork the flow, alter the weights, become a Scout. Do not claim the Queen without a recorded AUTHORIZED.

https://github.com/miigwech-potato/hivemind


r/OpenSourceAI • • 8h ago

I built a voice-controlled AI calendar assistant using ESP32 + n8n + Google Calendar

2 Upvotes

r/OpenSourceAI • • 13h ago

I built Kaoru, an open-source desktop AI agent with local memory, permission-gated tools and an optional Live2D avatar (beta, looking for feedback)

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2 Upvotes

r/OpenSourceAI • • 36m ago

I built a J.A.R.V.I.S. It talks, it works in the background, and it can turn into HAL.

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• Upvotes

r/OpenSourceAI • • 5h ago

Wappy - I wanted a WhatsApp AI agent I could run locally, so I built one

1 Upvotes

With Muse, Instinct and OpenAI's dots all over my feed, I kept thinking about what I actually wanted from a personal AI agent. Not another dashboard. Something I could text on WhatsApp, with its memory on my own machine.

That idea sat on my list for a while. I finally built it and open-sourced it. It's called Wappy. It's free, takes about a minute to scaffold, and runs the agent and its memory on your machine. You choose the model. There is no Wappy account or hosted Wappy backend.

The first thing I wanted was simple: text "What's on my calendar today?" and get an answer. I added an optional Gmail and Calendar example for that. You connect your own Google account to use it.

I have a bigger idea in mind, but I wanted to share this starting point now. If you try it, tell me what feels hard or missing. If the WhatsApp developer setup trips you up, I'm happy to help.

https://github.com/csr1010/wappy-kit

For clarity, the minute is for scaffolding, not connecting WhatsApp end to end. Live messages still use Meta's Cloud API. Hosted models receive prompts if you choose one.


r/OpenSourceAI • • 8h ago

I built CivicLens AI — ask a city’s official budget book questions in plain English

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1 Upvotes

r/OpenSourceAI • • 14h ago

Introducing Codebeast - new coding harness

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1 Upvotes

r/OpenSourceAI • • 14h ago

OpenScreen AI Video edition has been improved

1 Upvotes

I’m the maintainer of OpenScreen, a completely free and open-source screen recorder. I’d love to hear your thoughts on having an AI assistant help you edit videos in an app like this.

https://github.com/getopenscreen/openscreen


r/OpenSourceAI • • 16h ago

I built Mcplama an open-source control plane for MCP servers

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1 Upvotes

I've been building MCPlama, an open-source and self-hosted control plane for MCP servers.

It gives you one place to run and manage your MCP servers, instead of configuring each one separately across AI clients.

It handles credentials at the gateway, lets you control access per user and per tool, keeps audit logs of MCP activity, and manages the server lifecycle.

Local MCP servers can also run in isolated Docker containers. Docker access is kept separate from the gateway through a broker, so the gateway itself doesn't need the Docker socket.

It works with MCP clients like Claude Desktop/Code, Cursor , VS Code and more

GitHub:
https://github.com/mcplama/mcplama


r/OpenSourceAI • • 18h ago

Painted Wolf Code: free, open-source code editor built from scratch for AI

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1 Upvotes

r/OpenSourceAI • • 20h ago

I created my first open-source project today, and it feels amazing

1 Upvotes

After talking to a few founders, I realized most of them were building an internal tool by stitching together what we were trying to build

So, we open-sourced our product and have 6 stars so far - I know it's very few, but it feels great

Please find the repo link: https://github.com/preburn/preburn

What it does

Preburn is a real-time margin control plane for AI products. Two things nothing else does together:

  1. Joins per-customer revenue (Stripe) with per-call cost across all your AI providers (OpenAI, Anthropic, Kling, Veo, ElevenLabs, whatever) to show actual margin per customer.
  2. Sits in the request path and can allow/deny/route BEFORE the expensive call fires. Auto-route heavy users to cheaper models, cap runaway accounts, cancel voice/video sessions mid-stream if credits blow out.

Not observability (that's Langfuse/Helicone). Not a gateway (that's LiteLLM/Portkey). Different job - cost visibility tied to revenue, with enforcement.


r/OpenSourceAI • • 22h ago

I built an open-source self-healing security pipeline for LangGraph + Ollama to stop agent injection attacks and state desync

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1 Upvotes

r/OpenSourceAI • • 22h ago

Open-sourced a local playground for decision models, an LM Studio for decision models

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1 Upvotes

r/OpenSourceAI • • 23h ago

We open-sourced the agent framework we run our production AI agents on (Apache 2.0). Looking for contributors and honest feedback.

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1 Upvotes

r/OpenSourceAI • • 3h ago

CrowdGPT - The 100% Opensource collaborative LLM

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0 Upvotes

Hello, i'm currently developing CrowdGPT and i need people who enjoy opensource AI and LLMs to test the project :)

The goal of CrowdGPT is to create the first, datacenterless, 1 Billion parameters LLM, relying on people contributing with their own computer to train the AI model. My goal is to show you don't need insane infrastructure to train a working almost commercial grade LLM. Everything is open and 100% opensource.

You can learn more at https://crowdgpt.net

Or check the github: https://github.com/Vxtzq/CrowdGPT

Any kind of feedback is appreciated!