PROVIDER MIGRATION PATH
gpt-4.1
OpenAI's announced successor.
GPT-4.5 Preview is retired.
What replaces GPT-4.5 Preview?
For a direct OpenAI API replacement for GPT-4.5 Preview, compare gpt-4.1 first. As of 2026-11-02, its verified Standard blended price is $3.50 per 1M tokens at a 75% input / 25% output mix. ECI is an estimated general-capability measure; this is not a task-performance guarantee.
Historical ECI 136.7 · Current direct API price unavailable
REPLACEMENT DECISION
Provider migration path.
Direct API prices at 75% input / 25% output. ECI is estimated general capability, not task success.
ECI intervals can overlap; no choice guarantees task results or API compatibility.
Replacement questions
Which replacement did OpenAI announce for GPT-4.5 Preview?
OpenAI announced gpt-4.1. As of 2026-11-02, its verified Standard blended price is $3.50 per 1M tokens at a 75% input / 25% output mix. This historical provider advice can differ from today's price-and-ECI screening choice. Provider notice.
Is the replacement for GPT-4.5 Preview API compatible?
API compatibility has not been verified. Check the provider's migration guidance and test your integration before switching.
Prices verified 2026-11-02; ECI snapshot 2026-11-01. Retirement applies to the OpenAI direct API; seller routes need separate evidence. Retirement notice · ECI data · Browse current models.