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MODEL · ENTITY #3464

chat.deepseek.com

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MODELS · 1 SOURCE · DeepSeek

DeepSeek publishes open-source DeepSeek‑V4 preview with 1M-token context

DeepSeek has open-sourced a preview of DeepSeek‑V4, offering two variants: DeepSeek‑V4‑Pro (1.6T total / 49B active params) and DeepSeek‑V4‑Flash (284B total / 13B active params). The company says both models support a default 1M-token context, introduce novel token-wise compression and DSA (DeepSeek Sparse Attention), claim open-source state‑of‑the‑art agentic and reasoning performance (trailing only Gemini‑3.1‑Pro among models they compare to), and are available now via chat.deepseek.com and updated APIs with compatibility for OpenAI ChatCompletions & Anthropic endpoints; older models deepseek-chat and deepseek-reasoner will be retired on Jul 24, 2026 at 15:59 UTC.

8.0

MODELS · 1 SOURCE · DeepSeek

DeepSeek releases DeepSeek‑V3.1 with hybrid 'Think & Non‑Think' agent mode and open-source weights

DeepSeek released DeepSeek‑V3.1, introducing a hybrid inference mode called Think & Non‑Think (toggleable via the “DeepThink” button at chat.deepseek.com), faster 'Think' responses vs. DeepSeek‑R1‑0528, improved tool use and multi-step agent skills, Anthropic API format support, and beta Strict Function Calling support. V3.1 Base received 840B tokens of continued pretraining for long-context extension; the tokenizer and chat template were updated (tokenizer_config.json); open-source weights for DeepSeek‑V3.1 and DeepSeek‑V3.1‑Base are published on Hugging Face, and new pricing/off-peak discount changes take effect Sep 5, 2025, 16:00 UTC.

7.0