Vectorize

Vectorize is the company behind Hindsight, an open source agent memory system released under the MIT license. It gives AI agents persistent, per user memory that carries across sessions and improves over time, so an agent that is corrected or hits a failed tool call can use that experience the next time. The vendor positions it as more than retrieval, with a reflection layer that consolidates individual facts into reusable knowledge and curated mental models. Developers work with three core operations called Retain, Recall and Reflect, available through a Python SDK, a REST API and a built in MCP server. The memory layer is model agnostic, so the underlying LLM can be swapped without losing what the agent learned. The vendor states that recall runs several retrieval strategies in parallel and reports a 94.6 percent score on the LongMemEval benchmark. Coding agents such as Claude Code and Cursor can be told to install it themselves through a one line skill command. Pricing has three options. Self hosted use is free and runs from a single Docker command. Hindsight Cloud is pay as you go with no fixed monthly fee or seat pricing. Published rates include $10.00 per million tokens to retain, $0.75 per million tokens to recall, $0.05 per reflect call and $0.25 per million tokens stored per month. Enterprise pricing is available by contacting sales.