Claims and evidence
- Released Primary source[1]first paragraph; sidebar DeepSeek-V2.5 Release 2024/09/05 [2]Date: 2024-09-05
- Status AvailableWeights are still public and ungated on Hugging Face. In the DeepSeek API, deepseek-chat moved to DeepSeek-V2.5-1210 on 2024-12-10. Primary source[3] [2]Date: 2024-12-10
- Replaced by DeepSeek-V2.5-1210In the DeepSeek API only: deepseek-chat was upgraded to DeepSeek-V2.5-1210. The weights stay available. Primary source[2]Date: 2024-12-10
- Derived from (merge) DeepSeek-V2-Chat-0628DeepSeek merged DeepSeek-V2-0628 with DeepSeek-Coder-V2-0724 (code line, not a record in Model History). The model card names the parents more loosely as DeepSeek-V2-Chat and DeepSeek-Coder-V2-Instruct. Primary source[1]first paragraph; Version History [2]Date: 2024-09-05 [3]1. Introduction
- Change · Other Merges the general chat model DeepSeek-V2-0628 with the code model DeepSeek-Coder-V2-0724 into one model.Compared with DeepSeek-V2-Chat-0628 Primary source[1]first paragraph; Version History
- Change · Availability One model now serves both the deepseek-chat and deepseek-coder API models, which DeepSeek kept for backward compatibility.Compared with DeepSeek-V2-Chat-0628 Primary source[2]Date: 2024-09-05
- Change · Safety DeepSeek says it defined safety boundaries more clearly, making the model more resistant to jailbreaks while applying safety policies to normal requests less often.Compared with DeepSeek-V2-Chat-0628 Primary source[1]
- Change · Other DeepSeek says the model aligns better with human preferences and improves writing and instruction following.Compared with DeepSeek-V2-Chat-0628 Primary source[1]
- Feature Function callingIn the DeepSeek API; DeepSeek says Function Calling, FIM completion and JSON output remain unchanged. Primary source[1]first paragraph
- Open weights YesDeepSeek Model License (license link in the model card). Primary source[1]Open-Source [3]
- Access API, consumer app, Open-weights download Primary source[1]first paragraph; Open-Source
Lineage
Predecessors
No known predecessor.
Successors
No known successor.
Based on
- DeepSeek-V2-Chat-0628 · 28 June 2024 · derived (merge)
Variants and derived
- DeepSeek-V2.5-1210 · 10 December 2024 · revision
Siblings
None recorded.
All ancestors
- DeepSeek LLM · 29 November 2023
- DeepSeek-V2 · 6 May 2024
- DeepSeek-V2-Chat-0628 · 28 June 2024
All descendants
- DeepSeek-V2.5-1210 · 10 December 2024
- DeepSeek-V3 · 26 December 2024
- DeepSeek-R1 · 20 January 2025
- DeepSeek-R1-Zero · 20 January 2025
- Sonar Reasoning Pro · Perplexity · February 2025?
- R1 1776 · Perplexity · 18 February 2025
- DeepSeek-V3-0324 · 24 March 2025
- MAI-DS-R1 · Microsoft · 17 April 2025
- Phi-4-mini-reasoning · Microsoft · 30 April 2025
- DeepSeek-R1-0528 · 28 May 2025
- Phi-4-mini-flash-reasoning · Microsoft · 9 July 2025
- DeepSeek-V3.1 · 21 August 2025
- DeepSeek-V3.1-Terminus · 22 September 2025
- DeepSeek-V3.2-Exp · 29 September 2025
- DeepSeek-V3.2 · 1 December 2025
- DeepSeek-V3.2-Speciale · 1 December 2025
- DeepSeek-V4-Flash · 24 April 2026
- DeepSeek-V4-Pro · 24 April 2026
- DeepSeek-V4-Flash-0731 · 31 July 2026
- DeepSeek-V4-Pro-0813 · 13 August 2026
- DeepSeek-V4-Flash-Vision-Exp · 21 August 2026
- DeepSeek-V4.1-Flash · 10 September 2026
Variants
No variants recorded in this record.
Related AI Radar coverage
AI Radar coverage starts in June 2026; no coverage linked yet.