Model limit probe

OpenAI: GPT-4.1 | concurrency limit

OpenAI: GPT-4.1 concurrency limit decides whether a key can enter a production route. TestKey reads model ID openai/gpt-4.1, provider OpenAI, catalog context, real-key headers, 429 errors, and region signals together.

Model

openai/gpt-4.1

OpenAI: GPT-4.1

Provider

OpenAI

62 models in catalog

Limit dimension

concurrency limit

concurrency

Visible signal

real key probe required

Context window: 1,047,576

Limit matrix summary

Model

openai/gpt-4.1

Limit dimension

concurrency

Visible signal

real key probe required

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

Why this limit matters

OpenAI: GPT-4.1 concurrency limit decides whether a key can enter a production route. TestKey reads model ID openai/gpt-4.1, provider OpenAI, catalog context, real-key headers, 429 errors, and region signals together.

Model: openai/gpt-4.1
Provider: OpenAI
Limit dimension: concurrency 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.
concurrency limit must bind model ID openai/gpt-4.1; limits from another model at the same provider cannot be reused.
concurrency limit · real key probe required · 1,047,576

Operator action

OpenAI: GPT-4.1 concurrency 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: 1,047,576

Open key checker

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