The open-weight challenger that broke the cost curve. V4 Flash and Pro, a free chat app, and an OpenAI-compatible API — how to use DeepSeek for reasoning, coding, and serious work without the frontier price tag.
What DeepSeek is, why it broke the cost curve, V4 Flash vs Pro, and the free chat app vs the API. Your orientation to the open-weight challenger.
The everyday DeepSeek workflows — included in both paid tiers.
The free chat app end to end: research, drafting, analysis, and the think-mode toggle for hard problems.
The two-model lineup, the 1M-token context they share, and a simple rule for picking Flash (fast/cheap) vs Pro (deeper).
How DeepSeek's reasoning works and the brief patterns that get rigorous, step-by-step answers instead of confident guesses.
Using DeepSeek to write, refactor, and debug — where it matches the frontier, where it doesn't, and how to keep it honest.
Free app vs API pricing, the 5M free-token grant, cache discounts, and how to keep the bill near zero.
The deep, power-user lessons — exclusive to Pro+.
Register, grab a key, and make your first request via the OpenAI- and Anthropic-compatible endpoints — no new SDK required.
Move off the retired legacy aliases: the new model parameters, the July 2026 cutoff, and what changes (and doesn't).
Load entire docs and repos into a single prompt: chunking, prompt structure, and where the long context changes the job.
Cache hits at a tenth of the price, Flash-vs-Pro routing, and batching patterns that cut a real workload's spend.
What 'open-weight' actually buys you, the hardware reality, and when running it yourself beats the hosted API.
Where DeepSeek wins (cost, openness, reasoning value), where it lags, and a decision rule for when to switch.
All 12 DeepSeek lessons are available today — plus every other tool track, the hands-on builds, and the playground. Founding pricing — $9/mo Pro, $19/mo Pro+ — locks your rate for life: the price you join at never goes up.
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