Alpha Vantage News & Sentiment vs Massive (ex-Polygon.io) News: full comparison for 2026
Quick verdict
Alpha Vantage News & Sentiment (3.8/5) edges ahead of Massive (ex-Polygon.io) News (3.8/5) overall. Alpha Vantage News & Sentiment is the better choice for hobby quants wanting news sentiment beside price data. Massive (ex-Polygon.io) News is the stronger option for trading-app developers already using Polygon or Massive data. The right pick depends on your budget, how much history you need and whether you need full text.
Alpha Vantage News & Sentiment vs Massive (ex-Polygon.io) News: head-to-head summary
| Criterion | Alpha Vantage News & Sentiment | Massive (ex-Polygon.io) News |
|---|---|---|
| Founded | 2017 | 2016 |
| HQ | Boston, Massachusetts, USA | Atlanta, Georgia, USA |
| Team size | Not publicly disclosed | Not publicly disclosed |
| Rating | 3.8 / 5 | 3.8 / 5 |
| Primary differentiator | Ticker and topic sentiment scores from the same key as market data | Per-ticker sentiment with a written reason, included in stock data plans |
| Pricing model | Free key; premium plans by rate limit | Monthly plans per asset class |
| Entry price | $49.99/mo | $29/mo |
| Formats & SDKs | REST API, JSON, CSV | REST API, JSON, WebSocket |
| Typical uses | Financial services, Research & academia | Financial services, Research & academia |
Alpha Vantage News & Sentiment vs Massive (ex-Polygon.io) News: overview
Alpha Vantage News & Sentiment
Alpha Vantage was founded in Boston in 2017 by Olivier Porte and Steve Zheng and went through Y Combinator's Summer 2018 batch. Its NEWS_SENTIMENT function returns market news with an overall sentiment score plus per-ticker and per-topic scores, from the same key that serves prices, fundamentals and technical indicators. Many hobby trading projects start here because the free key arrives instantly. Third-party guides describe the free allowance as 25 requests a day at five a minute, and premium plans as starting at $49.99 a month for 75 requests a minute with no daily cap. Commercial use is a separate question, and one source reports commercial licences in the $499 to $2,499 a month range. Responses carry summaries and links; full articles live on the publishers' sites.
Massive (ex-Polygon.io) News
Massive is the name Polygon.io took on October 30, 2025. The company was founded in Atlanta around 2016 by Quinton Pike, and old api.polygon.io endpoints keep working beside the new api.massive.com base. Its ticker news endpoint returns recent articles for a symbol with summaries, publisher details and an insights array giving a sentiment label and a one-sentence reason for each ticker mentioned. Sentiment only exists for articles published after July 2, 2024. Ticker news is included in every Stocks plan: the free Basic tier reaches two years of history, and Stocks Starter costs $29 a month. Official SDKs cover Python, Go, JavaScript and more, and flat files can be pulled from S3.
Features: Alpha Vantage News & Sentiment vs Massive (ex-Polygon.io) News
| Capability | Alpha Vantage News & Sentiment | Massive (ex-Polygon.io) News |
|---|---|---|
| Full article text | ✗ | ✗ |
| Historical archive | ✗ | ✓ |
| NLP enrichment | ✓ | ✓ |
| Story/event clustering | ✗ | ✗ |
| Official SDK | ✗ | ✓ |
| Streaming or webhooks | ✗ | ✗ |
| Free access | ✓ | ✓ |
Formats and SDKs: Alpha Vantage News & Sentiment vs Massive (ex-Polygon.io) News
| Format / SDK | Alpha Vantage News & Sentiment | Massive (ex-Polygon.io) News |
|---|---|---|
| REST API | ✓ | ✓ |
| Python SDK | N/A | ✓ |
| Node.js SDK | N/A | ✓ |
| Webhooks | N/A | N/A |
| WebSocket | N/A | ✓ |
| MCP server | ✓ | N/A |
| S3/bulk delivery | N/A | ✓ |
| BigQuery | N/A | N/A |
Pricing comparison: Alpha Vantage News & Sentiment vs Massive (ex-Polygon.io) News
| Criterion | Alpha Vantage News & Sentiment | Massive (ex-Polygon.io) News |
|---|---|---|
| Entry price | $49.99/mo | $29/mo |
| Pricing model | Free key; premium plans by rate limit | Monthly plans per asset class |
| Access models | Free tier, Monthly plans, Enterprise contract | Free tier, Monthly plans, Enterprise contract |
| Price transparency | Public price | Public price |
| Price tier | Budget | Budget |
Who each API suits: Alpha Vantage News & Sentiment vs Massive (ex-Polygon.io) News
| Dimension | Alpha Vantage News & Sentiment | Massive (ex-Polygon.io) News |
|---|---|---|
| Buyer type | Individuals to enterprise | Individuals to enterprise |
| Typical uses | Financial services, Research & academia | Financial services, Research & academia |
| Example use cases | Adding a sentiment column to a backtest. Student finance projects. | News beside charts in a trading app. Explaining price moves with sentiment reasons. |
| How you get access | Free tier | Free tier |
Alpha Vantage News & Sentiment vs Massive (ex-Polygon.io) News: pros and cons
| Alpha Vantage News & Sentiment | |
|---|---|
| + | Free key with no approval wait |
| + | Sentiment per ticker and per topic in each response |
| + | Prices and fundamentals on the same account |
| + | Premium tiers are sold by rate limit, which makes scaling simple to price |
| - | 25 free requests a day runs out quickly |
| - | Commercial use may need a separate, much pricier licence |
| - | Summaries and links only, no article text |
| Massive (ex-Polygon.io) News | |
|---|---|
| + | News comes with every Stocks plan, including the free one |
| + | Sentiment includes a short explanation you can show users |
| + | Mature SDKs and WebSocket streams for prices |
| + | Old Polygon code keeps working after the rebrand |
| - | Sentiment is missing for anything before July 2024 |
| - | Covers listed companies only |
| - | Each asset class is billed separately |
Who should choose Alpha Vantage News & Sentiment?
A typical fit: adding a sentiment column to a backtest.
Ticker and topic sentiment scores from the same key as market data. Paid access starts at $49.99/mo. Typical uses: Financial services, Research & academia.
Who should choose Massive (ex-Polygon.io) News?
A typical fit: news beside charts in a trading app.
Per-ticker sentiment with a written reason, included in stock data plans. Paid access starts at $29/mo. Typical uses: Financial services, Research & academia.
Decision matrix: Alpha Vantage News & Sentiment vs Massive (ex-Polygon.io) News
| Your situation | Recommended choice |
|---|---|
| You want to start free before paying | Both |
| Your budget is at the lower end | Massive (ex-Polygon.io) News |
| You need full article text in the response | Neither returns full text |
| You need years of historical news | Massive (ex-Polygon.io) News |
| You want an official SDK | Massive (ex-Polygon.io) News |
| You are wiring news into an LLM agent | Both work through plain REST calls |
Use case fit: Alpha Vantage News & Sentiment vs Massive (ex-Polygon.io) News
| Use case | Alpha Vantage News & Sentiment fit | Massive (ex-Polygon.io) News fit | Winner |
|---|---|---|---|
| Financial services | Strong | Strong | Both equally |
| Research & academia | Strong | Strong | Both equally |
Verdict: Alpha Vantage News & Sentiment vs Massive (ex-Polygon.io) News
Alpha Vantage News & Sentiment (3.8/5) is the stronger overall choice as a news data source. Ticker and topic sentiment scores from the same key as market data.
Massive (ex-Polygon.io) News (3.8/5) is worth a look if you need explaining price moves with sentiment reasons. If your situation matches that, Massive (ex-Polygon.io) News is a competitive option.
Related comparisons
Alpha Vantage News & Sentiment vs Massive (ex-Polygon.io) News FAQ
Is Alpha Vantage News & Sentiment better than Massive (ex-Polygon.io) News?
Alpha Vantage News & Sentiment (3.8/5) scores higher overall, but "better" depends on your use case. Alpha Vantage News & Sentiment's strongest advantage: free key with no approval wait. Massive (ex-Polygon.io) News's strongest advantage: news comes with every Stocks plan, including the free one.
How do Alpha Vantage News & Sentiment and Massive (ex-Polygon.io) News differ in pricing?
Alpha Vantage News & Sentiment: free key; premium plans by rate limit, with paid access from $49.99/mo. Massive (ex-Polygon.io) News: monthly plans per asset class, with paid access from $29/mo. Both offer some free access for testing.
Which is better for enterprise: Alpha Vantage News & Sentiment or Massive (ex-Polygon.io) News?
Both sell enterprise contracts. Neither carries licensed publisher content, so check copyright terms before republishing anything.
What are the main differences between Alpha Vantage News & Sentiment and Massive (ex-Polygon.io) News?
What sets Alpha Vantage News & Sentiment apart: ticker and topic sentiment scores from the same key as market data. What sets Massive (ex-Polygon.io) News apart: per-ticker sentiment with a written reason, included in stock data plans. They also differ on entry price ($49.99/mo vs $29/mo) and typical uses (Financial services, Research & academia vs Financial services, Research & academia).
Verify all details directly with each API before making a decision.