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DeepSeek released V4.1 Flash on September 10, 2026 and is routing its own V4 Pro flagship to it four days later at Flash prices. A 552B backbone that activates 8B parameters to read and 16B to write, native vision, an 890-byte-per-token KV cache, and a scaffold table showing the same model swing 8.7 points on one benchmark depending on the agent harness.
There is no announced DeepSeek V5. What the V4 line already shipped, how to read the official change log, and how to plan without a version number.
There is no responsible one-line winner in a Kimi K3 vs DeepSeek V4 comparison without current first-party model cards, access details, and matched tests. Choose only after confirming that each model name is officially available in your intended interface or API.
DeepSeek’s risk depends on what you send and how it’s deployed: hosted convenience versus self-hosted control, with personal and regulated data kept out either way.
DeepSeek V4-Flash-0731 is an official, open-weight, MIT-licensed MoE model with a 1M-token context, tuned for agents and coding, at about $0.14 per million input tokens. Specs, benchmarks, and why open weights plus low prices pressure the closed labs.
A practical guide to using DeepSeek at no cost: a five-step chat workflow, prompt patterns by task, ways to fix weak answers, privacy and accuracy limits, and how free chat differs from the metered API.
ChatGPT
18 minA practical comparison of the best ChatGPT alternatives in 2026: Claude, Gemini, Perplexity, Copilot, Grok, and DeepSeek – with pricing, honest trade-offs, and a clear guide to picking the right one.
AI Tools
17 minA practical comparison of DeepSeek and ChatGPT for coding, writing, privacy, pricing, API costs, and business workflows in 2026.