Free trends API comparison

Most trend data tools offer a 'free tier' that either expires after a trial, requires a credit card, or limits data to the point of uselessness. This page compares what is genuinely free in 2026 - pytrends, SerpApi, Glimpse, Exploding Topics, and Trends MCP - with honest limits, no-credit-card status, and what each free tier actually lets you do.

The trend data tool landscape has a wide range of 'free' options - from genuinely free with permanent limits (pytrends, Trends MCP) to credit-card-required trials (SerpApi), browser-only tools (Glimpse), and freemium products with locked API access (Exploding Topics). This comparison breaks down what each option actually costs, what data you get, and what the real limitations are.

The five options

pytrends

Cost: Free, open-source, no account required.

What it does: Unofficial Python library that scrapes the Google Trends web interface. Returns relative interest over time (0-100), related queries, and geographic breakdowns for any keyword.

Limits: No official rate limit documentation - Google rate-limits aggressively and returns 429s at moderate query volumes. No absolute volume. Breaks without warning when Google updates its frontend; the open-source maintainers fix it on an irregular schedule.

Credit card required: No.

API/AI integration: Python only. No REST endpoint, no MCP support. Requires a Python environment to use.

Best for: One-off keyword research in a Python notebook. Not suitable for production pipelines or AI-agent workflows.


SerpApi (Google Trends endpoint)

Cost: 100-credit trial at signup. After that, paid plans start at $25/month for 1,000 searches. No ongoing free tier.

What it does: Managed scraping proxy that converts Google Trends web pages into structured JSON. Returns the same relative (0-100) interest data as the native Google Trends interface, plus related topics and geographic breakdowns.

Limits: No free tier after trial. Credits expire at end of billing cycle with no rollover. Google Trends endpoint does not provide absolute volume. Google-only - no TikTok, Reddit, YouTube, or Amazon data.

Credit card required: Yes, after the 100-credit trial.

API/AI integration: REST API with standard HTTP. No MCP support. Requires integration code.

Best for: Developer pipelines that need reliable Google Trends JSON without scraping, and where budget for $25-150/month is available.


Glimpse

Cost: Free plan includes limited weekly searches. Pro plan starts at $49/month.

What it does: Chrome extension that overlays absolute search volume on top of the Google Trends website. Shows volume estimates alongside the standard 0-100 relative graph.

Limits: Free plan has low weekly search limits (varies, typically 5-10 saves per week). Browser-only - no API. No multi-platform data. Requires Chrome.

Credit card required: No for free plan.

API/AI integration: None. Browser extension only.

Best for: Marketers and SEO professionals who work in Google Trends daily and need volume numbers without leaving the browser.


Exploding Topics

Cost: Free plan available (limited topic browsing). Pro plans start at $39/month. API access requires higher-tier plans.

What it does: Curated discovery database of hand-picked rising trends, organized by category and growth rate. Useful for finding topics you did not know to search for.

Limits: Free plan does not include API access. API is available only on Pro plans ($99+/month). Data is curated/editorial - no arbitrary keyword queries. Google Search-centric; limited multi-platform coverage.

Credit card required: No for free browsing plan. Yes for API access.

API/AI integration: REST API on paid plans. No MCP support.

Best for: Content strategists and investors who want a browsable list of curated rising trends, without needing to specify a keyword.


Trends MCP

Cost: 100 requests per day, permanently free. No credit card required. Paid plans for higher volume and additional sources.

What it does: MCP server delivering live trend data from Google Search, TikTok, YouTube, Reddit, Amazon, Wikipedia, news, web traffic, app downloads, npm, Steam, and more. Four tools: get_trends (time series), get_growth (growth rates), get_ranked_trends (discovery), get_top_trends (live trending).

Limits: Free tier covers core sources including Google Search. Some sources and higher query volumes require a paid plan. 100 requests/day is sufficient for most individual research workflows.

Credit card required: No.

API/AI integration: MCP-native for Claude, Cursor, VS Code, Windsurf, Continue, Bolt, Lovable, and any MCP-compatible AI client. Also accessible via standard HTTP for Python and other integrations.

Best for: AI-first trend research workflows, developers who need multi-platform data, and anyone who wants live trend data in their AI assistant without a credit card.


Summary comparison

Tool Truly free Credit card Absolute volume Multi-platform AI/MCP Data quality
pytrends Yes No No No (Google only) No Breaks regularly
SerpApi Trial only After trial No No (Google only) REST only Reliable
Glimpse Limited No Yes (browser only) No No Good
Exploding Topics Browse only API requires paid No Limited REST (paid) Curated
Trends MCP Yes (100 req/day) No Yes Yes (15+ sources) MCP + REST Managed

Which free option fits which use case

For Python data pipelines with no budget: pytrends is the only genuinely free programmatic option for Google Trends. Accept the fragility, build retries and error handling, and do not use it for anything requiring uptime guarantees.

For AI-native workflows (Claude, Cursor, VS Code): Trends MCP is the only option that works directly in an AI assistant on a free tier. Connect it once and query live trend data in conversation.

For keyword research in a browser: Glimpse's free plan adds volume to Google Trends without a subscription, within its weekly search limit.

For discovering trends without a starting keyword: Exploding Topics' free browse tier is useful, but the API (required for automation) needs a paid plan.

For production REST pipelines that need reliability: SerpApi after the trial. Budget is required; the infrastructure is solid.

Common questions

Yes. pytrends is an open-source Python library with no cost or registration. However, it is an unofficial Google Trends scraper. It has no API key, no rate limit buffer, and breaks whenever Google updates its frontend. It returns relative data only (0-100 scale, no absolute volume). For intermittent personal use it works. For production pipelines or AI-agent workflows, the reliability risk makes it unsuitable.
SerpApi offers a 100-search trial at signup, after which a credit card is required for any usage. There is no ongoing free tier. The Google Trends endpoint costs credits from your subscription - starting at $25/month for 1,000 searches with no rollover. It is not free beyond the initial trial.
Yes. Trends MCP offers 100 requests per day on the free tier with no credit card required. All four tools (get_trends, get_growth, get_ranked_trends, get_top_trends) are available. The free tier covers Google Search trend data and selected sources. No expiry - it is a permanent free tier, not a trial.
Among the tools in this comparison, only Trends MCP supports the Model Context Protocol natively, which means it is the only option that connects directly to Claude, Cursor, VS Code, Windsurf, and other MCP-compatible AI clients on the free tier. pytrends requires a Python environment. SerpApi requires a paid plan for ongoing use. Glimpse is browser-only. Exploding Topics Pro includes an API but starts at $39/month.
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Free tier includes 100 requests per month. No credit card required. Works with Claude, Cursor, ChatGPT, Raycast, and every MCP client.
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