Spell Check Client
Spell Check Client
Bing Spell Check provides spelling correction and context-aware grammar fixes — handles slang and brand names.
Built on Bing's vast query corpus — strong on slang, brand names, colloquialisms
Sunsets 2025-08-11
Obtain a key from Azure. GET /v7.0/spellcheck?text=ths+is+an+exmple&mode=proof
Uptime · 30-day window
About this API
Bing Spell Check offers two modes: spell mode (spelling only — fast, conservative) and proof mode (spelling + grammar + usage — slower, comprehensive). Its strength comes from Bing's query logs — strong on slang and brand names. For example, it correctly handles "iphone" (preserves lowercase when in a search box), "lol" (treats as normal), "google" (recognizes as a brand). Useful in search-box correction, form-input assistance, and social-content proofing. Sunsets 2025-08-11 — alternatives require self-hosting (LLM-based spell check now exceeds traditional methods).
What you can build
- 1Search-box typo correction
- 2Real-time correction in user input forms
- 3Auto-proofreading social comments
Strengths & limitations
Strengths
- Built on Bing's vast query corpus — strong on slang, brand names, colloquialisms
- Context-aware (distinguishes "there"/"their"/"they're")
Limitations
- Sunsets 2025-08-11
- Weak support for Chinese and other Asian languages
Example request
curl https://microsoft.com/<endpoint>Getting started
Obtain a key from Azure. GET /v7.0/spellcheck?text=ths+is+an+exmple&mode=proof
FAQ
When should I use spell vs proof mode?+
spell for search boxes (low latency, low disruption); proof for word-processor scenarios (deep analysis).
Technical details
- Auth type
- unknown
- Pricing
- unknown
- Protocols
- REST
- SDKs
- python, javascript, csharp, java
- Response time
- 80 ms
- Last health check
- 5/12/2026, 7:37:52 AM
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