Bitcoin Fear & Greed Index — Real-Time Market Sentiment
Track Bitcoin market sentiment updated every 90 seconds from 1,000+ sources. The Perception Fear & Greed Index measures investor emotions on a scale from 0 (extreme fear) to 100 (extreme greed). Last updated: March 2026.
What is the Bitcoin Fear & Greed Index?
The Bitcoin Fear & Greed Index is a market sentiment indicator that measures investor emotions on a scale from 0 to 100. A score of 0 represents extreme fear, while 100 represents extreme greed. The index aggregates data from media coverage, social media discussion, and market indicators to provide a real-time snapshot of market psychology. Traders and analysts use it to identify potential buying opportunities during extreme fear and potential market tops during extreme greed.
Perception vs Alternative.me Fear & Greed Index
| Feature | Perception | Alternative.me |
|---|---|---|
| Sources analyzed | 1,000+ (news, earnings, analyst, regulatory, social) | 5-6 indicators |
| Update frequency | Every 90 seconds | Once daily |
| Methodology | NLP analysis of actual content | Price-derived metrics |
| API access | MCP + REST API | Free API |
| Historical data | Since 2023, daily granularity | Since 2018 |
How is it calculated?
The Perception Fear & Greed Index analyzes actual content from 1,000+ curated sources using natural language processing. Unlike price-derived indices that track volatility and trading volume, Perception scores the tone and sentiment of news articles, earnings call transcripts, analyst research, social media posts, and regulatory filings. This content-based approach captures narrative shifts before they appear in price action.
Score Ranges
- 0-24: Extreme Fear — Market panic. Historically, extreme fear has preceded average 47% recoveries within 90 days.
- 25-44: Fear — Investors cautious, negative news dominant. Typically lasts 2-4 weeks.
- 45-55: Neutral — Balanced sentiment, often preceding significant moves in either direction.
- 56-74: Greed — Optimism rising, FOMO increasing. Can extend for weeks in bull markets.
- 75-100: Extreme Greed — Maximum euphoria. Has preceded an average 23% drawdown within 60 days.
Frequently Asked Questions
- How is Perception different from Alternative.me?
- Perception tracks 1,000+ media sources vs Alternative.me's 5-6 indicators. We update every 90 seconds vs daily. Our AI analyzes actual news content, showing WHY sentiment is changing.
- Is there an API for the Fear & Greed Index?
- Yes. Access real-time Fear & Greed data via our MCP connector or REST API. Free tier includes 5 queries/day.
- Can I get alerts when sentiment changes?
- Yes. Perception offers real-time alerts via Slack, email, and webhooks with custom thresholds.