Reasonix
DeepSeek-native terminal coding agent that cuts input-token costs to ~1/5 via prefix-cache alignment.
Opens reasonix.io in a new tab.
How the 7.4 was reached
- Quality of output7/10
35,707 GitHub stars and active commits show strong adoption; only a vendor session sample of output. Source: github.com
- Ease of use8/10
One-line npm install, several access modes, plan mode and checkpoints; needs a DeepSeek API key. Source: reasonix.io
- Pricing value8/10
Free MIT tool; requires a DeepSeek API key, though a signup grant and low per-session cost ($0.043) help. Source: deepseek.ai
- API and integration quality7/10
MCP over stdio, SSE and HTTP, markdown skills and subagents; no separate API or SDK found. Source: reasonix.io
- Solves the problem it claims to solve7/10
Sandbox, gated permissions and checkpoints match the leave-it-running agent claim; 35k stars support it, no independent task results. Source: github.com
7.4/10 is the average of the five criterion scores above. The evidence comes from 3 different sources.Scores come from public evidence (the tool's own pages and documentation, and independent reviews); we do not test every tool hands-on. Scored 29 September 2026, on version 1 of our five-criteria scoring method.
Pricing
- Open-source MIT
- CLI/TUI interface
- Desktop app
- Local browser UI
- Pay only DeepSeek API costs
For the full list of what each plan includes, and current prices, see deepseek.ai.
Key Features
- Cache-first append-only loop aligned to DeepSeek's byte-stable prefix cache
- 90%+ cache hit rate on long sessions reducing input-token cost to ~1/5
- CLI/TUI terminal-native interface
- Desktop app for visual session management and approvals
- Local browser UI via `reasonix serve`
Pros & Cons
Pros
- Dramatically lower DeepSeek API costs via cache optimization
- MIT open-source — no subscription or usage gate
- Multiple interfaces (CLI, desktop, browser) sharing one engine
- Simple install via npm or Homebrew
Cons
- Hard-locked to DeepSeek models — no multi-provider support
- Early-stage project with limited community and documentation
- No built-in model or API key management; depends on user's DeepSeek account
- GitHub Pages site suggests minimal commercial backing
Reasonix is a smart niche bet if you're already using DeepSeek and want to stretch your API budget on long coding sessions. The cache-alignment trick is technically sound and the MIT license makes it zero-risk to try. Not a fit if you need multi-model flexibility or enterprise support.
Added to scored.tools on
For the Reasonix team: put this score on your website
A small image (a badge) that shows this score and links back to this page. Free for any tool, at any score. It always shows the current score, so it changes when the score does. Copy this code into your website where you want the badge:
<a href="https://scored.tools/tools/deepseek-reasonix/"><img src="https://scored.tools/badge/deepseek-reasonix.svg" alt="Reasonix on scored.tools: 7.4/10" width="160" height="40"></a>Do you work for Reasonix? Claim this page: prove you work there, then confirm the facts, correct a mistake or add a short reply. It is free and never changes the score.
Competitors to Reasonix
Other tools in the Coding category worth comparing.
OpenHands
8.2/10Open-source platform for cloud coding agents that automate engineering work securely and transparently.
Cursor
7.8/10AI-native code editor built on VS Code with integrated chat, autocomplete, and codebase understanding.
Windsurf
5.8/10Desktop IDE and agent manager where AI agents write, test and review code, with local and cloud agent options.
GitHub Copilot
6.6/10AI pair programmer that suggests code completions and entire functions directly in your editor.
Replit
6.6/10Build and deploy apps collaboratively with AI-powered coding in the browser.