DeepSeek-Reasonix Reaches 1,321 Stars — Terminal Coding Agent Engineered Around DeepSeek's Prefix-Cache Stability Achieves 99.82% Cache Hit Rate at $12 per 435M Tokens

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DeepSeek-Reasonix is a DeepSeek-native terminal coding agent that treats prefix-cache stability as a core architectural invariant rather than an optimization. By keeping the first N tokens of each request byte-stable, a real user achieved 435M input tokens with a 99.82% cache hit rate on May 1, costing approximately $12 instead of the $61 it would cost without caching. The agent includes flash-first cost control and automatic tool-call repair, runs via a single npx command, and is intentionally DeepSeek-only — a deliberate bet that deep platform integration beats multi-provider abstraction.