AI Cost RegistryView the data
RETIRED DIRECT API · 2026-03-26

GPT-4 (March 2023) is retired.

What replaces GPT-4 (March 2023)?

For a direct OpenAI API replacement for GPT-4 (March 2023), compare gpt-5 first. As of 2026-11-02, its verified Standard blended price is $3.4375 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 125.7 · Current direct API price unavailable
REPLACEMENT DECISION

Replace GPT-4 (March 2023) today.

Direct API prices at 75% input / 25% output. ECI is estimated general capability, not task success.

PROVIDER MIGRATION PATH

OpenAI logogpt-5

OpenAI's announced successor.

Blended / 1M$3.4375
ECI estimateNot scored
Context272,000tokens
MINIMIZE COST · SAME PROVIDER

OpenAI logogpt-5-nano

Lower ECI estimate may mean a capability tradeoff.

Blended / 1M$0.1375
ECI estimate139.3134.3–141.4
Context272,000tokens

The low-cost option retains context and clears the retired model's ECI lower bound. ECI intervals can overlap; no choice guarantees task results or API compatibility.

Replacement questions

Which replacement did OpenAI announce for GPT-4 (March 2023)?

OpenAI announced gpt-5. As of 2026-11-02, its verified Standard blended price is $3.4375 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 (March 2023) 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.