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Perplexity✕already broken

openai/gpt-5.4 shutdown

Shutdown date: 2026-10-24. No replacement named.

openai/gpt-5.4 shutdown: from its source to your code

docs.perplexity.aiquote checked
model retirementfrom openai/gpt-5.4
2026-10-2413 days ago
Your code1 thing to find
Nemotron fixes

In its own wordsmatches the page ✓

On October 24, 2026 at 00:00 UTC, the Agent API and Orchestrator API will retire these model IDs: `openai/gpt-5.4` `openai/gpt-5.4-mini` `openai/gpt-5.4-nano` `openai/gpt-5.2` `openai/gpt-5.1` `openai/gpt-5` `openai/gpt-5-mini`

docs.perplexity.ai/docs/resources/changelog.mdfrom the provider's own sitechecked 2026-11-05#3464b41f5a

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model ID "openai/gpt-5.4"

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read by nvidia/Nemotron-3-Ultra-550b-a55b · checked against the page · perplexity-ai-2026-10-24-openai-gpt-5-4