About Bolt Forge
Bolt Forge is a new agent inside Bolt.new that runs entirely on open-source models, including GLM 5.3 Flash and GLM 5.3 as the main pair, with Kimi K3 and DeepSeek v4 Pro available as experimental picks. It sits alongside Standard and Max in the agent picker. Every Pro plan subscriber gets up to 50X more usage on Forge with no daily caps through October 14, 2026.
Review
Bolt Forge is an opt-in agent that trades session privacy for a significantly higher usage ceiling. Build sessions-prompts, code, and fix traces-get anonymized and contribute to training new open-weight models with Arcee AI. You can stop sharing at any time by switching back to Standard or Max, but while Forge is active, the tool scores 92.2 out of 101 on Bolt's internal benchmark, roughly 91% of the top paid model's capability.
Key Features
- Runs on open-source models with two experimental options (Kimi K3 and DeepSeek v4 Pro) alongside the main GLM pair.
- One monthly usage bar with no daily limits; hitting 100% triggers an automatic switch to the Standard agent with no overage charges.
- Operates on WebContainers in-browser, which means no server cost and no local setup.
- Anonymized session data feeds into open-weight model training with Arcee AI; sharing stops the moment you switch agents.
- Research preview status-the team recommends duplicating your project before running serious builds.
Pricing and Value
Bolt Forge is included with every Pro plan at no additional charge. The main value is the usage multiplier: up to 50X more usage than the Standard or Max agents, with no daily caps, through October 14, 2026. Pricing after that date has not been announced. There is no separate subscription or add-on fee for Forge itself-it's a plan benefit while the promotion runs.
Pros
- 50X usage multiplier removes the credit anxiety that can come with heavy brainstorming and drafting sessions.
- No daily caps; the single monthly bar auto-switches to Standard instead of cutting you off.
- In-browser WebContainers skip server costs and local environment setup entirely.
- Experimental model picks let you test alternative open-source backends without leaving the Bolt.new interface.
- Opt-in data sharing gives a clear off-ramp for anyone who needs to keep a session private.
Cons
- The 91% benchmark score is based on an internal test set; no public eval or third-party benchmark is available to verify the capability gap.
- As a research preview, the agent may produce unexpected results on complex builds-the team explicitly advises duplicating projects before testing.
- Bolt Forge is not well suited for production work or sessions that involve proprietary code you cannot anonymize, since the data-sharing requirement rules out confidential projects.
Bolt Forge fits builders who burn through credits quickly during the ideation and draft phase and want room to experiment without touching their main usage pool. It's a practical option for throwaway prototypes, rough mockups, and low-stakes exploration where session privacy isn't a concern. Anyone working on sensitive codebases or needing the highest-fidelity output for production should stay on Standard or Max.
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