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DeepSeek: DeepSeek V3.1
deepseek/deepseek-chat-v3.1
Tool useJSONReasoningStreaming
DeepSeek-V3.1 is a large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes via prompt templates. It extends the DeepSeek-V3 base with a two-phase long-context...
Pricing
Input
$0.21 / 1M
Output
$0.79 / 1M
Specs
Context
163,840 tokens
Input
text
Output
text
Knowledge cutoff: 2025-03-31
Released: 2025-08
Supported parameters
frequency_penaltyinclude_reasoninglogit_biasmax_tokensmin_ppresence_penaltyreasoningrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_p