Day 127 of vibe coding an app until I make $1,000,000. BridgeVoice ships soon. Today is the last day of launch prep. Auth, UI polish, and final bug fixes before it goes public. And yes. We're on Sonnet 5 watch. If Anthropic drops it mid-stream, we drop everything and test it live. Going live in 1 hour.

Anthropic's internal codename for Claude Sonnet 5 is "Fennec." A fennec fox is known for massive ears relative to its body size. Sonnet 5 reportedly has a 1M token context window — five times larger than Opus 4.5's 200K. The codename is the spec sheet. Previous Claude models all used animal codenames. The leak came from misconfigured Vertex AI deployment logs on Google's infrastructure, where the model already exists. It's just waiting to be switched on.

The most important thing about Claude Sonnet 5 isn't the benchmarks. It's what happens when a Sonnet-tier model matches Opus performance at half the cost. Opus 4.5 scores 80.9% on SWE-Bench. Sonnet 5 reportedly clears that same mark. With a 1M token context window. At Sonnet pricing. For vibe coders running Claude Code 8 hours a day, this isn't an upgrade. It's a cost revolution. The model you use all day just got twice as affordable and potentially faster.