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Language Detector

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Detects the primary and any secondary languages of a given text, identifies the writing system used, and assesses the formality level, providing a structured response with confidence scoring. This tool is useful for language analysis, translation services, and content localization.

Prompt Text

Detect the language of the following text. Also identify:
- Primary language
- Any secondary languages present
- Script/writing system used
- Formality level (formal, informal, technical, colloquial)

Text:
{{text}}

Response format:
{
  "primary_language": "ISO 639-1 code",
  "language_name": "English name",
  "secondary_languages": [],
  "script": "Latin|Cyrillic|Arabic|...",
  "formality": "formal|informal|technical|colloquial",
  "confidence": 0.0-1.0
}

Evaluation Results

1/28/2026
Overall Score
4.74/5

Average across all 3 models

Best Performing Model
Low Confidence
openai:gpt-5-mini
4.83/5
openai:gpt-5-mini
#1 Ranked
4.83
/5.00
adh
4.9
cla
4.8
com
4.8
In
1,038
Out
1,432
Cost
$0.0031
google:gemini-2.5-flash-lite
#2 Ranked
4.78
/5.00
adh
4.9
cla
4.7
com
4.7
In
1,129
Out
375
Cost
$0.0003
anthropic:claude-3-5-haiku
#3 Ranked
4.62
/5.00
adh
4.3
cla
4.7
com
4.8
In
1,179
Out
881
Cost
$0.0045
Test Case:

Tags

manual