Marketaux vs Massive (ex-Polygon.io) News: full comparison for 2026
Quick verdict
Marketaux (3.9/5) edges ahead of Massive (ex-Polygon.io) News (3.8/5) overall. Marketaux is the better choice for fintech developers needing ticker-tagged news cheaply. 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.
Marketaux vs Massive (ex-Polygon.io) News: head-to-head summary
| Criterion | Marketaux | Massive (ex-Polygon.io) News |
|---|---|---|
| Founded | Not disclosed | 2016 |
| HQ | Not publicly disclosed | Atlanta, Georgia, USA |
| Team size | Not publicly disclosed | Not publicly disclosed |
| Rating | 3.9 / 5 | 3.8 / 5 |
| Primary differentiator | Entity-level sentiment on every article, free plan included | Per-ticker sentiment with a written reason, included in stock data plans |
| Pricing model | Monthly request plans | Monthly plans per asset class |
| Entry price | $29/mo | $29/mo |
| Formats & SDKs | REST API, JSON | REST API, JSON, WebSocket |
| Typical uses | Financial services, News & content apps | Financial services, Research & academia |
Marketaux vs Massive (ex-Polygon.io) News: overview
Marketaux
Marketaux saves fintech developers from writing a ticker matcher. Every stock, crypto or forex article it returns lists the entities it mentions, each with a sentiment score from -1 to 1, and that works on the free plan too. Listings put coverage at about 5,000 sources in 30+ languages and 200,000+ tracked entities (per company website; independently unverifiable). The free plan allows 100 requests a day but returns only three articles per request. The official pricing page lists Basic at $29 a month for 2,500 daily requests, and entity statistics and trending endpoints need a paid plan. The site does not say who operates it or where.
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: Marketaux vs Massive (ex-Polygon.io) News
| Capability | Marketaux | 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: Marketaux vs Massive (ex-Polygon.io) News
| Format / SDK | Marketaux | 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 | N/A |
| S3/bulk delivery | N/A | ✓ |
| BigQuery | N/A | N/A |
Pricing comparison: Marketaux vs Massive (ex-Polygon.io) News
| Criterion | Marketaux | Massive (ex-Polygon.io) News |
|---|---|---|
| Entry price | $29/mo | $29/mo |
| Pricing model | Monthly request plans | Monthly plans per asset class |
| Access models | Free tier, Monthly plans | Free tier, Monthly plans, Enterprise contract |
| Price transparency | Public price | Public price |
| Price tier | Budget | Budget |
Who each API suits: Marketaux vs Massive (ex-Polygon.io) News
| Dimension | Marketaux | Massive (ex-Polygon.io) News |
|---|---|---|
| Buyer type | Individuals to enterprise | Individuals to enterprise |
| Typical uses | Financial services, News & content apps | Financial services, Research & academia |
| Example use cases | A news tab in a portfolio tracker. Sentiment features for a hobby trading model. | News beside charts in a trading app. Explaining price moves with sentiment reasons. |
| How you get access | Free tier | Free tier |
Marketaux vs Massive (ex-Polygon.io) News: pros and cons
| Marketaux | |
|---|---|
| + | Ticker extraction and sentiment come built in |
| + | Commercial use from $29 a month |
| + | Covers crypto and forex as well as equities |
| + | Filters by symbol, industry and exchange |
| - | Three articles per free request makes testing slow |
| - | Anonymous operator |
| - | Financial topics only |
| 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 Marketaux?
A typical fit: a news tab in a portfolio tracker.
Entity-level sentiment on every article, free plan included. Paid access starts at $29/mo. Typical uses: Financial services, News & content apps.
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: Marketaux 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 | Marketaux |
| 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: Marketaux vs Massive (ex-Polygon.io) News
| Use case | Marketaux fit | Massive (ex-Polygon.io) News fit | Winner |
|---|---|---|---|
| Financial services | Strong | Strong | Both equally |
| News & content apps | Strong | Limited | Marketaux |
| Research & academia | Limited | Strong | Massive (ex-Polygon.io) News |
Verdict: Marketaux vs Massive (ex-Polygon.io) News
Marketaux (3.9/5) is the stronger overall choice as a news data source. Entity-level sentiment on every article, free plan included.
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
Marketaux vs Massive (ex-Polygon.io) News FAQ
Is Marketaux better than Massive (ex-Polygon.io) News?
Marketaux (3.9/5) scores higher overall, but "better" depends on your use case. Marketaux's strongest advantage: ticker extraction and sentiment come built in. Massive (ex-Polygon.io) News's strongest advantage: news comes with every Stocks plan, including the free one.
How do Marketaux and Massive (ex-Polygon.io) News differ in pricing?
Marketaux: monthly request plans, with paid access from $29/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: Marketaux or Massive (ex-Polygon.io) News?
Massive (ex-Polygon.io) News sells enterprise contracts with negotiated volume and SLA terms. Neither carries licensed publisher content, so check copyright terms before republishing anything.
What are the main differences between Marketaux and Massive (ex-Polygon.io) News?
What sets Marketaux apart: entity-level sentiment on every article, free plan included. 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 ($29/mo vs $29/mo) and typical uses (Financial services, News & content apps vs Financial services, Research & academia).
Verify all details directly with each API before making a decision.