Bolt
Coding
Chat-based builder for websites, apps and prototypes in the browser.
Free$25/mo
DeepSeek
Free chat app and low-cost API built on DeepSeek's open models.
DeepSeek is an AI lab that publishes open-weight language models and runs a free chat app on top of them. The web and mobile chat cost nothing; developers pay per token for the API, which is among the cheapest on the market. It is a good fit for reasoning and coding questions when budget matters.
What it's good for
- Free reasoning and math help
- Cheap API for side projects