Massive (ex-Polygon.io) News vs Mediastack: full comparison for 2026
Quick verdict
Massive (ex-Polygon.io) News (3.8/5) edges ahead of Mediastack (3.8/5) overall. Massive (ex-Polygon.io) News is the better choice for trading-app developers already using Polygon or Massive data. Mediastack is the stronger option for low-traffic sites needing a cheap commercial headline feed. The right pick depends on your budget, how much history you need and whether you need full text.
Massive (ex-Polygon.io) News vs Mediastack: head-to-head summary
| Criterion | Massive (ex-Polygon.io) News | Mediastack |
|---|---|---|
| Founded | 2016 | 2015 |
| HQ | Atlanta, Georgia, USA | Vienna, Austria (apilayer); owned by Idera |
| Team size | Not publicly disclosed | Part of Idera |
| Rating | 3.8 / 5 | 3.8 / 5 |
| Primary differentiator | Per-ticker sentiment with a written reason, included in stock data plans | Commercial use and historical news from $24.99 a month |
| Pricing model | Monthly plans per asset class | Monthly request plans |
| Entry price | $29/mo | $24.99/mo |
| Formats & SDKs | REST API, JSON, WebSocket | REST API, JSON |
| Typical uses | Financial services, Research & academia | News & content apps, Marketing & PR |
Massive (ex-Polygon.io) News vs Mediastack: overview
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.
Mediastack
Mediastack belongs to apilayer, the Vienna company behind ipstack and weatherstack, which Julian and Paul Zehetmayr founded in 2015 and the US software group Idera bought in January 2021. If you already use another apilayer API, the key format, parameters and error codes will look familiar. It covers live and historical news from 7,500+ sources in 13 languages, with filters for country, category, language and keyword. The free plan gives 100 requests a month, which a day of testing can use up, and paid plans run from $24.99 for 10,000 requests to $249.99 for 250,000. Responses carry descriptions and metadata, without full text or enrichment.
Features: Massive (ex-Polygon.io) News vs Mediastack
| Capability | Massive (ex-Polygon.io) News | Mediastack |
|---|---|---|
| Full article text | ✗ | ✗ |
| Historical archive | ✓ | ✓ |
| NLP enrichment | ✓ | ✗ |
| Story/event clustering | ✗ | ✗ |
| Official SDK | ✓ | ✗ |
| Streaming or webhooks | ✗ | ✗ |
| Free access | ✓ | ✓ |
Formats and SDKs: Massive (ex-Polygon.io) News vs Mediastack
| Format / SDK | Massive (ex-Polygon.io) News | Mediastack |
|---|---|---|
| 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: Massive (ex-Polygon.io) News vs Mediastack
| Criterion | Massive (ex-Polygon.io) News | Mediastack |
|---|---|---|
| Entry price | $29/mo | $24.99/mo |
| Pricing model | Monthly plans per asset class | Monthly request plans |
| Access models | Free tier, Monthly plans, Enterprise contract | Free tier, Monthly plans |
| Price transparency | Public price | Public price |
| Price tier | Budget | Budget |
Who each API suits: Massive (ex-Polygon.io) News vs Mediastack
| Dimension | Massive (ex-Polygon.io) News | Mediastack |
|---|---|---|
| Buyer type | Individuals to enterprise | Individuals to enterprise |
| Typical uses | Financial services, Research & academia | News & content apps, Marketing & PR |
| Example use cases | News beside charts in a trading app. Explaining price moves with sentiment reasons. | A category news feed on a small website. Classroom projects that need commercial terms. |
| How you get access | Free tier | Free tier |
Massive (ex-Polygon.io) News vs Mediastack: pros and cons
| 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 |
| Mediastack | |
|---|---|
| + | Among the lowest paid entry prices for general news |
| + | Shares conventions with the other apilayer APIs |
| + | History included on paid plans |
| + | Short docs with copy-paste code |
| - | 100 free requests a month barely covers testing |
| - | Only 7,500 sources in 13 languages |
| - | No full text, entities or sentiment |
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.
Who should choose Mediastack?
A typical fit: a category news feed on a small website.
Commercial use and historical news from $24.99 a month. Paid access starts at $24.99/mo. Typical uses: News & content apps, Marketing & PR.
Decision matrix: Massive (ex-Polygon.io) News vs Mediastack
| Your situation | Recommended choice |
|---|---|
| You want to start free before paying | Both |
| Your budget is at the lower end | Mediastack |
| You need full article text in the response | Neither returns full text |
| You need years of historical news | Both |
| 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: Massive (ex-Polygon.io) News vs Mediastack
| Use case | Massive (ex-Polygon.io) News fit | Mediastack fit | Winner |
|---|---|---|---|
| Financial services | Strong | Limited | Massive (ex-Polygon.io) News |
| Research & academia | Strong | Limited | Massive (ex-Polygon.io) News |
| News & content apps | Limited | Strong | Mediastack |
| Marketing & PR | Limited | Strong | Mediastack |
Verdict: Massive (ex-Polygon.io) News vs Mediastack
Massive (ex-Polygon.io) News (3.8/5) is the stronger overall choice as a news data source. Per-ticker sentiment with a written reason, included in stock data plans.
Mediastack (3.8/5) is worth a look if you need classroom projects that need commercial terms. If your situation matches that, Mediastack is a competitive option.
Related comparisons
Massive (ex-Polygon.io) News vs Mediastack FAQ
Is Massive (ex-Polygon.io) News better than Mediastack?
Massive (ex-Polygon.io) News (3.8/5) scores higher overall, but "better" depends on your use case. Massive (ex-Polygon.io) News's strongest advantage: news comes with every Stocks plan, including the free one. Mediastack's strongest advantage: among the lowest paid entry prices for general news.
How do Massive (ex-Polygon.io) News and Mediastack differ in pricing?
Massive (ex-Polygon.io) News: monthly plans per asset class, with paid access from $29/mo. Mediastack: monthly request plans, with paid access from $24.99/mo. Both offer some free access for testing.
Which is better for enterprise: Massive (ex-Polygon.io) News or Mediastack?
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 Massive (ex-Polygon.io) News and Mediastack?
What sets Massive (ex-Polygon.io) News apart: per-ticker sentiment with a written reason, included in stock data plans. What sets Mediastack apart: commercial use and historical news from $24.99 a month. They also differ on entry price ($29/mo vs $24.99/mo) and typical uses (Financial services, Research & academia vs News & content apps, Marketing & PR).
Verify all details directly with each API before making a decision.