Cognikernel vs Knoku
Cognikernel is free, while Knoku has a free plan plus paid upgrades. Cognikernel is open source and Knoku is not. You can run Cognikernel on your own machine or server; Knoku is hosted by the vendor.
Which one should you try?
Cognikernel
FreeBest for Users running Claude Code or Codex on multi-session projects
Pricing, capabilities and platforms side by side. Prices are as of the "Pricing checked" date in the table.

Cognikernel
The tool hooks into Claude Code and Codex session surfaces, extracts decisions, constraints, and discarded approaches, and writes them into an event-sourced log keyed on the project path — so the next session picks up where the last one stopped. Because the store is path-keyed and local, memory made in Claude Code is readable by Codex on the same project without any sync step. There is no vector database, no embeddings infrastructure, no API call — just typed, auditable memo records on disk. The ceiling appears when your context needs go beyond structured decisions: narrative code understanding, semantic search across past sessions, or anything requiring retrieval ranked by similarity will not work here.

Knoku
Knoku indexes public and internal sources — crawled websites, GitHub Markdown, Notion runbooks, Confluence spaces, Jira tickets, Zendesk help articles, and OpenAPI schemas — into a single project index, then serves answers through an embeddable widget, Slack, and API. Citations point back to the source file, so users can verify the answer without trusting a black box. The built-in analytics track deflection rates, repeated questions, and knowledge gaps, which means you see where your docs are failing without exporting data to a separate analytics tool. The ceiling appears when you need answers that require synthesizing information across sources in ways that demand reasoning rather than retrieval — and there is no self-hosted option, so every query touches Knoku's infrastructure.
| Attribute | Cognikernel | Knoku |
|---|---|---|
| Pricing | Free | Freemium |
| Price | — | $129/month |
| Pricing checked | Not checked yet | Jul 1, 2026 |
| Free trial | Not stated | 14 days |
| Open source | Yes | No |
| Has API | No | Yes |
| Self-hosted option | Yes | No |
| Platforms | Python package (pip/pipx/uv); Claude Code hooks and MCP server for Codex | Web |
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Made up your mind?
Cognikernel
FreeBest for Users running Claude Code or Codex on multi-session projects
Specs come from each tool's own site and docs (how we test). AIDiveForge is editorially independent.