Reasoning Tools JSON Open weights

DeepSeek V4.1 Flash model for reasoning and agentic coding

deepseek/deepseek-v4.1-flash 2026-09-10 1M context $0.02/M input $1/M output
70 providers
Reasoning Tools JSON Open weights

DeepSeek V4 Pro snapshot with million-token context and support for thinking and non-thinking modes

deepseek/deepseek-v4-pro-0813 2026-08-13 1M context $0.132/M input $0.396/M output
42 providers
Reasoning Tools JSON Open weights

Official DeepSeek V4 Flash release with enhanced agentic capabilities and integrated DSpark speculative decoding

deepseek/deepseek-v4-flash-0731 2026-07-31 1M context $0.035/M input $0.07/M output
56 providers
Reasoning Tools Open weights

DeepSeek chat model for instruction following, coding, and analysis

deepseek/deepseek-chat-v3.1 2025-08-21 163.84K context $0.19/M input $0.79/M output
10 providers
Reasoning Open weights

Classic open reasoning model for transparent math, coding, and deliberate problem solving

deepseek/deepseek-r1 2025-01-20 128K context $0.58/M input $2.319/M output
16 providers