Model limit probe

OpenAI: GPT-5.4 Pro | TPM limit

OpenAI: GPT-5.4 Pro TPM limit decides whether a key can enter a production route. TestKey reads model ID openai/gpt-5.4-pro, provider OpenAI, catalog context, real-key headers, 429 errors, and region signals together.

Model

openai/gpt-5.4-pro

OpenAI: GPT-5.4 Pro

Provider

OpenAI

62 models in catalog

Limit dimension

TPM limit

tpm-limit

Visible signal

real key probe required

Context window: 1,050,000

Limit matrix summary

Model

openai/gpt-5.4-pro

Limit dimension

tpm-limit

Visible signal

real key probe required

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

Why this limit matters

OpenAI: GPT-5.4 Pro TPM limit decides whether a key can enter a production route. TestKey reads model ID openai/gpt-5.4-pro, provider OpenAI, catalog context, real-key headers, 429 errors, and region signals together.

Model: openai/gpt-5.4-pro
Provider: OpenAI
Limit dimension: TPM limit

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.
TPM limit must bind model ID openai/gpt-5.4-pro; limits from another model at the same provider cannot be reused.
TPM limit · real key probe required · 1,050,000

Operator action

OpenAI: GPT-5.4 Pro TPM limit 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: 1,050,000

Open key checker

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