{
  "schema_version": "rangoon.article.v1",
  "id": "https://rangoon.ai/insights/archive-deepseek-v3-0324-update-2025/",
  "url": "https://rangoon.ai/insights/archive-deepseek-v3-0324-update-2025/",
  "markdown_url": "https://rangoon.ai/insights/archive-deepseek-v3-0324-update-2025/index.md",
  "json_url": "https://rangoon.ai/insights/archive-deepseek-v3-0324-update-2025/index.json",
  "title": "DeepSeek-V3-0324 separated a post-training update from a new base model",
  "summary": "DeepSeek recorded V3-0324 on March 25, 2025 and said it retained the prior base model while updating post-training. Checkpoint identity and regressions still need testing.",
  "language": "en",
  "author": {
    "name": "Rangoon Editorial",
    "url": "https://rangoon.ai/insights/editorial/"
  },
  "publisher": {
    "name": "Rangoon",
    "maintainer": "Hypler",
    "url": "https://rangoon.ai/"
  },
  "format": "News analysis",
  "topic": {
    "slug": "models",
    "label": "Models",
    "url": "https://rangoon.ai/insights/topics/models/"
  },
  "tags": [
    {
      "slug": "deepseek",
      "label": "DeepSeek",
      "url": "https://rangoon.ai/insights/tags/deepseek/"
    },
    {
      "slug": "deepseek-v3-0324",
      "label": "DeepSeek-V3-0324",
      "url": "https://rangoon.ai/insights/tags/deepseek-v3-0324/"
    },
    {
      "slug": "post-training",
      "label": "post-training",
      "url": "https://rangoon.ai/insights/tags/post-training/"
    },
    {
      "slug": "model-evaluation",
      "label": "model evaluation",
      "url": "https://rangoon.ai/insights/tags/model-evaluation/"
    }
  ],
  "dates": {
    "published": "2026-10-23",
    "updated": "2026-10-23",
    "event": "2025-03-25"
  },
  "event_source_id": 1,
  "retrospective": true,
  "reading_minutes": 3,
  "takeaways": [
    "DeepSeek’s change log records deepseek-chat moving to DeepSeek-V3-0324 on March 25, 2025.",
    "Post-training can alter instruction following, style, refusal behavior, tool formatting, and answer length even when the base architecture stays fixed.",
    "The March 2025 record supports a DeepSeek-described post-training update. It does not establish a universal performance gain, a current endpoint state, or an independent replication of vendor scores."
  ],
  "source_note": "Historical reporting: DeepSeek’s change log dates the DeepSeek-V3-0324 upgrade to March 25, 2025; the release page and model artifact describe the update separately. The analysis below is original editorial analysis; it does not claim present availability, performance, or support.",
  "sources": [
    {
      "id": 1,
      "title": "DeepSeek API Docs: change log",
      "url": "https://api-docs.deepseek.com/news/news250325/",
      "published": "2025-03-25"
    },
    {
      "id": 2,
      "title": "DeepSeek-V3-0324 model card",
      "url": "https://huggingface.co/deepseek-ai/DeepSeek-V3-0324",
      "published": null
    }
  ],
  "image": {
    "url": "https://rangoon.ai/assets/editorial/archive-deepseek-v3-0324-update-2025-diagram-v1.webp",
    "thumbnail_url": "https://rangoon.ai/assets/editorial/archive-deepseek-v3-0324-update-2025-diagram-v1-thumb.webp",
    "alt": "Original models review diagram: V3-0324 checkpoint comparison. Concepts: V3 base, post-training, tool schema, regression suite, version ledger. Editorial checklist, not vendor test results or an official legal determination.",
    "type": "original-diagram",
    "caption": "V3-0324 checkpoint comparison. Original Rangoon explanatory diagram: concepts for editorial review, not measured results, an official legal determination, vendor interface or event photograph.",
    "credit": "Rangoon / Hypler",
    "source_url": "https://rangoon.ai/brand/",
    "rights_url": "https://rangoon.ai/terms/#media-use",
    "rights_note": "Hypler artwork permissions do not grant rights to third-party marks or imply endorsement."
  },
  "sections": [
    {
      "id": "event",
      "url": "https://rangoon.ai/insights/archive-deepseek-v3-0324-update-2025/#event",
      "heading": "What the V3-0324 record says",
      "paragraphs": [
        "DeepSeek’s change log records deepseek-chat moving to DeepSeek-V3-0324 on March 25, 2025. The accompanying release material said the update used the same base model as prior V3 and changed post-training, while listing vendor-reported gains in reasoning, front-end development, writing, search, and function calling. That distinction narrows what changed.",
        "The model artifact is a separate primary record for V3-0324. It documents an identifiable checkpoint rather than a generic V3 label. A claimed improvement on an evaluation remains conditioned on DeepSeek’s task, scoring, and comparison setup; it does not predict every prompt or application workflow."
      ],
      "bullets": [],
      "source_ids": [
        1,
        2
      ]
    },
    {
      "id": "operating-question",
      "url": "https://rangoon.ai/insights/archive-deepseek-v3-0324-update-2025/#operating-question",
      "heading": "Editorial analysis: treat post-training as behavior change",
      "paragraphs": [
        "Post-training can alter instruction following, style, refusal behavior, tool formatting, and answer length even when the base architecture stays fixed. A release gate should therefore include behavior fixtures alongside capability tasks: schemas, language requirements, policy boundaries, and tool argument validation.",
        "Keep the old and new outputs with their full prompts. If a later failure appears, compare the exact response shape and intermediate tool calls. That is more actionable than saying a named model family became better or worse."
      ],
      "bullets": [],
      "source_ids": []
    },
    {
      "id": "evaluation-boundary",
      "url": "https://rangoon.ai/insights/archive-deepseek-v3-0324-update-2025/#evaluation-boundary",
      "heading": "Editorial analysis: check improvements without averaging away regressions",
      "paragraphs": [
        "Build slices for the claims that matter to the workload. A coding improvement should be checked with executable tests; a function-calling claim with exact JSON and invalid-argument cases; a writing claim with a rubric and source constraints. Do not let a broad average hide a deterministic break.",
        "Use matched decoding and context. Changing temperature, system text, retrieval index, or tool descriptions during a checkpoint test prevents a clean attribution and weakens a rollback decision."
      ],
      "bullets": [],
      "source_ids": []
    },
    {
      "id": "decision-record",
      "url": "https://rangoon.ai/insights/archive-deepseek-v3-0324-update-2025/#decision-record",
      "heading": "Editorial analysis: version the model contract",
      "paragraphs": [
        "Record the endpoint, checkpoint, tokenizer or chat-template revision when supplied, schema version, date, and test result. Publish a clear compatibility note for callers that depend on structured results or a particular language format.",
        "A stable API surface can be valuable, but it should not cause a team to lose the model revision history behind it. The revision date is an operational datum, not editorial trivia."
      ],
      "bullets": [],
      "source_ids": []
    },
    {
      "id": "historical-limit",
      "url": "https://rangoon.ai/insights/archive-deepseek-v3-0324-update-2025/#historical-limit",
      "heading": "Editorial analysis: retain the release boundary",
      "paragraphs": [
        "The March 2025 record supports a DeepSeek-described post-training update. It does not establish a universal performance gain, a current endpoint state, or an independent replication of vendor scores.",
        "A useful hypothetical regression case is an application that expects a function call whenever a customer asks to change a record. If a post-training update becomes more conversational, it may explain the intended change instead of emitting the exact call. That can improve prose while failing the workflow. The fixture should include unambiguous actions, ambiguous requests that must ask a question, and forbidden actions that must be refused. Score the routing decision, argument validity, and final explanation independently. This test is grounded in the release’s stated function-calling improvement but does not assert a particular failure in V3-0324. It illustrates why checkpoint-level evaluation must include the integration contract instead of only general answer preference."
      ],
      "bullets": [],
      "source_ids": []
    }
  ],
  "project_context": null,
  "related_links": [],
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