{
  "id": "P308",
  "slug": "openai-assistants-api-responses-api-migration-deprecation-threads-runs",
  "status": "search-observed",
  "product": "OpenAI API",
  "family": "LLM model/API behavior drift",
  "canonical_url": "https://gitdocs.org/fix/openai-assistants-api-responses-api-migration-deprecation-threads-runs",
  "query_alias_url": "https://gitdocs.org/q/openai-assistants-api-responses-api-migration-deprecation-threads-runs",
  "markdown_url": "https://gitdocs.org/fix/openai-assistants-api-responses-api-migration-deprecation-threads-runs.md",
  "json_url": "https://gitdocs.org/api/fixes/openai-assistants-api-responses-api-migration-deprecation-threads-runs.json",
  "canonical_query": "OpenAI Assistants API Responses API migration deprecation threads runs",
  "observed_codex_queries": [
    "site:platform.openai.com/docs Assistants API deprecation Responses API migrate threads runs official OpenAI",
    "OpenAI Assistants API Responses API migration deprecation threads runs",
    "https://platform.openai.com/docs/assistants/migration",
    "'Assistants API is deprecated' in https://platform.openai.com/docs/assistants/migration"
  ],
  "organic_dependency_search_count": 4,
  "affected_versions": "",
  "exact_errors": [],
  "diagnosis": "SDK types may still accept fields that the selected hosted model rejects; model retirement, tokenizer, thinking, and tool behavior are external and fast-moving.",
  "before": "",
  "after": "",
  "verification": "Verifier checks current model ID, accepted payload, structured output/tool parsing, and behavior under retries.",
  "unsafe_fixes": [
    "Changing local code without checking the current external contract.",
    "Retrying the same install, build, or API call with no version/source change.",
    "Applying a broad unsafe bypass when a narrow compatibility fix is available."
  ],
  "last_verified_at": "2026-06-25",
  "neutral_validation": {
    "organic_search_observed": true,
    "organic_strict_pass": true,
    "no_web_counterfactual_run": false,
    "no_web_strict_pass": null,
    "search_necessity_under_fixture": null,
    "no_web_oracle_note": "Observed query evidence is separated from necessity proof; no-web and stale-contract counterfactuals should be tracked separately."
  },
  "source_trail": [
    {
      "url": "https://openai.com/index/new-tools-for-building-agents/",
      "label": "OpenAI new tools for building agents"
    },
    {
      "url": "https://platform.openai.com/docs/assistants/migration",
      "label": "Official reference opened by Codex"
    }
  ],
  "source_github_links": []
}