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DeepSeek 4.1 Flash scores 94.5 on Ship-Bench, costs $15 for a full build

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A developer tested whether DeepSeek 4.1 Flash could replace $20 monthly coding subscriptions like GitHub Copilot by running it through the Ship-Bench benchmark via OpenRouter. The model achieved an average score of 94.5 across five software development lifecycle roles, passing all 5 phases and 25 gates — the best result in the benchmark series to date. Contrary to expectations, the model performed strongest in architecture and UX design, while code review was its weakest area with a score of 85. The complete benchmark run consumed roughly 412 million tokens at a total cost of $15.04, with implementation tasks alone accounting for $13.43. The conclusion is conditional: pay-as-you-go pricing undercuts a $20 subscription for light usage of about one full build per month, but a stronger reasoning model is still recommended for the reviewer role.

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