Model limit probe

Anthropic: Claude 3.7 Sonnet | context window limit

Anthropic: Claude 3.7 Sonnet context window limit decides whether a key can enter a production route. TestKey reads model ID anthropic/claude-3.7-sonnet, provider Anthropic, catalog context, real-key headers, 429 errors, and region signals together.

Model

anthropic/claude-3.7-sonnet

Anthropic: Claude 3.7 Sonnet

Provider

Anthropic

13 models in catalog

Limit dimension

context window limit

context-window

Visible signal

catalog visible

Context window: 200,000

Limit matrix summary

Model

anthropic/claude-3.7-sonnet

Limit dimension

context-window

Visible signal

catalog visible

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

Why this limit matters

Anthropic: Claude 3.7 Sonnet context window limit decides whether a key can enter a production route. TestKey reads model ID anthropic/claude-3.7-sonnet, provider Anthropic, catalog context, real-key headers, 429 errors, and region signals together.

Model: anthropic/claude-3.7-sonnet
Provider: Anthropic
Limit dimension: context window limit

How to prove it

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

Start with the visible signal: catalog visible, then read headers and error bodies with read-only requests.
context window limit must bind model ID anthropic/claude-3.7-sonnet; limits from another model at the same provider cannot be reused.
context window limit · catalog visible · 200,000

Operator action

Anthropic: Claude 3.7 Sonnet context window 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: catalog visible
Context window: 200,000

Open key checker

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

Open models

Anthropic: Claude 3.7 Sonnet

Open providers

Anthropic