OpenPipe
openpipe.ai
Platform for fine-tuning LLMs from production data.
Quick Information
- Category:
- MLOps & Infrastructure
- Pricing:
- Contact Sales
- Platforms:
- Web, API
- Free Plan:
- No
- API Available:
- Yes
- Last Verified:
- October 2026
What Is OpenPipe?
OpenPipe is a platform for fine-tuning LLMs from production data, and its status needs a careful read. CoreWeave announced the acquisition of OpenPipe on September 3, 2025, with terms undisclosed. OpenPipe's open-source Agent Reinforcement Trainer, ART, is still listed as freely available. The big caveat is on the hosted product: one page, updated about 34 days before my search, says the standalone service is gone, that its training and inference capabilities moved to the Weights & Biases platform, and that legacy OpenPipe training and inference ended on July 30, 2026, concluding there is no current OpenPipe-hosted service price. That is a single source, so I could not confirm it against CoreWeave or Weights & Biases documentation.
Other 2026 pages are older in spirit. A pricing review describes usage-based pricing charged per token for training and inference, with a 30-day free trial, no permanent free tier and custom Enterprise plans, and an older reference lists Llama 3.1 8B at $0.30 input and $0.45 output per million tokens. Those figures are likely outdated if the shutdown report is right. If you are considering OpenPipe, check CoreWeave and Weights & Biases docs for the current fine-tuning offer before building on it.
OpenPipe's approach, logging production requests and turning them into fine-tuned smaller models, remains a useful pattern for cutting inference cost, and ART covers reinforcement learning for agents. It suits teams who want to distil an expensive model into a cheaper one. Compare Axolotl, Unsloth and CoreWeave. Browse the MLOps & Infrastructure tools directory for more.
What Can You Use OpenPipe For?
Fine-tuning from production logs
Cheaper models.
Agent reinforcement learning
ART.
OpenPipe Features
- Acquired by CoreWeave — September 3, 2025.
- Open-source ART — Free.
- Move to Weights & Biases — Per one report.
Who Is OpenPipe For?
- Teams reducing LLM costs — Distillation.
- Agent developers — RL training.
OpenPipe Pros & Limitations
What We Like
- Production-data approach
- Open-source ART
- CoreWeave backing
Limitations
- Hosted service status unclear
- Pricing likely outdated
- Single source for shutdown
OpenPipe Pricing
| Plan | Price | Main Features |
|---|---|---|
| ART (open source) | Free | Agent Reinforcement Trainer |
| Hosted service (legacy) | Usage-based per token; e.g. Llama 3.1 8B $0.30/$0.45 per million (older) | Reportedly ended July 30, 2026; unconfirmed |
Pricing was last verified October 2026. Check the official website for the latest pricing.
AI Listing Jungle Ranking
- Global Rank:
- #223
- Overall Score:
- 74.5/100
- Monthly Users:
- –
- Rank Change:
- ▲ 1352
This ranking reflects AI Listing Jungle's own independent scoring methodology and is not an endorsement by OpenPipe or its company. How Our Rankings Work
Frequently Asked Questions
Who owns OpenPipe?
CoreWeave, acquired in September 2025.
Is the hosted service still available?
One source says legacy service ended July 30, 2026.
Is ART free?
Yes, open source.
Where did it go?
Reportedly into Weights & Biases.
Our Take
Status uncertain after the acquisition.
Confirm availability before relying on it.
OpenPipe Alternatives
OpenPipe Comparisons
Ready to try OpenPipe?
Visit the official website to get started.
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