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V3Code runs one agent across several models. You pick the model, or let the router pick — the mode and everything else stays the same. The whole system is built around one idea: get the best models while keeping caching intact so it stays cheap.

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The V3 models (DeepSeek, optimized)

  • v3fast — an optimized version of DeepSeek V4 Flash: quick and cheap for everyday edits.
  • v3pro — an optimized version of DeepSeek V4 Pro: the stronger workhorse the editor was built around.
“Optimized” means the system around them is tuned to cache well and do the most with the fewest tokens — that’s where a lot of the cost savings come from.

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The Anthropic hybrids

These ship as hybrids that consult Anthropic — a cheaper model does the work and calls in a stronger one only when the task gets hard, so you get top-tier results without paying top-tier prices on every step.
HybridHow it works
Opus EasyHaiku does the work and calls Opus for the difficult parts.
Opus HardSonnet 5 does the work and calls Opus when needed.
Hybrid (switching)Switches between Sonnet, Opus, and Fable 5 as the task demands.
To you it behaves like a single model — the switching and escalation happen underneath.

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Auto: let it route

Auto picks and escalates for you. A cheaper model handles the easy steps and a stronger one takes over when needed. Auto is tuned to preserve prompt caching rather than break it — reshuffling the context every turn would throw away the cache and run up the bill, so V3Code steers the agents to keep the cache working.

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Free, BYOK, and paid

  • We work hard on the caching to make Anthropic as good as possible for BYOK users (your own Anthropic key) and as cheap as possible for paid users.
  • Paid users get customized versions of the Auto and hybrid routers — tuned to save money and use the fewest tokens. These are unlocked for paid BYOK users and paid plan users.
See BYOK for keys and Plans for what’s unlocked where.