{
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  "path": "/t/gpt-5-5-thinking-silently-routed-to-5-4-for-8-days/1380359#post_1",
  "publishedAt": "2026-05-06T03:17:38.000Z",
  "site": "https://community.openai.com",
  "textContent": "I manually selected GPT-5.5 thinking, but every response comes back as “used GPT-5.4 thinking” with no way to switch back. This has been going on for 8 days.\n\nI exported my data and found this in the conversation JSON:\n\n  * default_model_slug: gpt-5-5-thinking\n  * resolved_model_slug: gpt-5-4-thinking (every single message)\n\n\n\nCan anyone who understands the data export format confirm whether this indicates a backend routing mismatch or A/B test?\n\nI’ve contacted support and they said it would be escalated to a specialist team, but it’s been 4 days with no follow-up.",
  "title": "GPT-5.5 thinking silently routed to 5.4 for 8 days"
}