Model limit probe

OpenAI: GPT-4o (extended) | reset window

OpenAI: GPT-4o (extended) reset window decides whether a key can enter a production route. TestKey reads model ID openai/gpt-4o:extended, provider OpenAI, catalog context, real-key headers, 429 errors, and region signals together.

Model

openai/gpt-4o:extended

OpenAI: GPT-4o (extended)

Provider

OpenAI

62 models in catalog

Limit dimension

reset window

reset-window

Visible signal

real key probe required

Context window: 128,000

Limit matrix summary

Model

openai/gpt-4o:extended

Limit dimension

reset-window

Visible signal

real key probe required

Read-only check. Detection data burns after 5 minutes.

Why this limit matters

OpenAI: GPT-4o (extended) reset window decides whether a key can enter a production route. TestKey reads model ID openai/gpt-4o:extended, provider OpenAI, catalog context, real-key headers, 429 errors, and region signals together.

Model: openai/gpt-4o:extended
Provider: OpenAI
Limit dimension: reset window

How to prove it

Read-only check. Detection data burns after 5 minutes.

Start with the visible signal: real key probe required, then read headers and error bodies with read-only requests.
reset window must bind model ID openai/gpt-4o:extended; limits from another model at the same provider cannot be reused.
reset window · real key probe required · 128,000

Operator action

OpenAI: GPT-4o (extended) reset window is not just a number. It should become route throttling, sale tags, headroom alerts, fallback model suggestions, and price protection.

Read-only check. Detection data burns after 5 minutes.
Visible signal: real key probe required
Context window: 128,000

Open key checker

Read-only check. Detection data burns after 5 minutes.

Open models

OpenAI: GPT-4o (extended)

Open providers

OpenAI