Google's official API cannot retrieve captions from videos you do not control. The free Python library can, but YouTube often blocks requests from AWS, GCP, and Azure IP ranges. If the job needs to run reliably in the cloud, that leaves a hosted transcript API.
For caption-backed workloads at scale, Tapline is the best-value hosted option in this comparison. Failed requests cost nothing, and the same account covers search, comments, subtitle tracks, formats, channel data, and engagement heatmaps. Supadata is better when a video has no captions. At the $5 price point, TranscriptAPI includes more requests than Supadata. For local scripts, youtube-transcript-api remains hard to beat.
Best options at a glance
| Use case | Best fit | Why |
|---|---|---|
| Production-scale caption pipelines | Tapline | Lowest full-utilization rate at high volume, with no charge for failed requests |
| Transcript plus broader YouTube data | Tapline | Comments, heatmaps, formats, subtitle tracks, search, and channel data on one key |
| Videos without captions | Supadata | Advertises AI transcription when a caption track is unavailable |
| A small paid YouTube workload | TranscriptAPI | $5 buys 1,000 monthly requests; Supadata includes 300 at the same price |
| Local scripts or desktop apps | youtube-transcript-api | Free, MIT licensed, and simple when cloud IP blocking is not a concern |
| YouTube plus other social platforms | Supadata or ScrapeCreators | Both cover several social networks under one account |
| No-code scheduling or unusual sites | Apify | Large actor marketplace with scheduling and automation integrations |
| Supported metadata and channel operations | YouTube Data API v3 | Official and free where its quota and data policies fit the workload |
The live explorer calls the same Tapline subtitle endpoint as a paid plan. It works without an account, so you can inspect the response before comparing plans.
What the same workload costs
A low unit rate only helps when you can use the whole allocation. The table below compares the minimum monthly plan or prepaid spend for the same number of caption-backed transcripts. It uses monthly prices before annual discounts.
| Option | 10,000 | 100,000 | 500,000 | 1 million | Failed request |
|---|---|---|---|---|---|
| Tapline | $49 | $199 | $199 | $499 | Yes: costs 0 credits |
| Supadata | $47 | $297 | $897 | $897 | No: a 206 costs 1 credit |
| ScrapeCreators | $47 | $188 | $497 | $994 | Caution: not published |
| TranscriptAPI | $27.50 | $252.50 | $1,252.50 | $2,502.50 | Yes: one credit per success |
| Apify streamers actor | $24 + fees | $240 + fees | $1,200 + fees | $2,400 + fees | Caution: not published |
| youtube-transcript-api | $0 + proxies | $0 + proxies | $0 + proxies | $0 + proxies | No: failed calls still use proxy traffic |
| YouTube Data API v3 | No: unavailable | No: unavailable | No: unavailable | No: unavailable | n/a |
TranscriptAPI is cheapest at 10,000 transcripts. Based on the published pack sizes, four ScrapeCreators packs cost $188 at 100,000, just below Tapline's $199 Growth plan. At 500,000, Tapline costs $199 against $497 for ScrapeCreators and $897 for Supadata. At one million, Tapline is $499, Supadata is $897, and two ScrapeCreators packs are $994.
Billing policy changes the effective cost on messy datasets. If 15,000 IDs in a 100,000-video run have no transcript, Supadata's published policy charges one credit for each 206 response. Tapline charges zero for those failed requests. The table shows the plan bill, not that difference in useful results.
Capability comparison
For production buyers, the useful columns are cloud behavior and what happens when captions are missing. Adjacent YouTube data matters too: transcript projects often need search, metadata, channel data, or comments once they move past a prototype.
| Option | Cloud production | AI fallback | Adjacent YouTube data | Other platforms |
|---|---|---|---|---|
| Tapline | Yes: hosted API | No: existing captions only | Search, metadata, channels, playlists, comments, heatmap, formats, subtitle tracks | No other social platforms; also offers Airbnb data |
| Supadata | Yes: hosted API | Yes: 2 credits per video minute | Search, metadata, channels, channel videos, playlists | TikTok, Instagram, X, Facebook |
| ScrapeCreators | Yes: hosted API | Caution: not published | 36+ advertised APIs; endpoint credit costs are not broken out | Instagram, TikTok, X, LinkedIn, Facebook, Reddit |
| TranscriptAPI | Yes: hosted API | Caution: not published | Search, channel videos, playlist videos | No: YouTube only |
| Apify | Caution: actor-dependent | Caution: actor-dependent | Depends on the actor; video, channel, and search are available | Broad marketplace coverage |
| youtube-transcript-api | Caution: cloud IPs are often blocked | No: existing captions only | No: transcripts only | No: |
| YouTube Data API v3 | No: no third-party transcripts | n/a | Supported metadata, search, channel, playlist, and comment operations | No: |
Tapline publishes the broadest set of YouTube-specific endpoints among the hosted transcript APIs compared here. That claim does not include every actor in Apify's marketplace or every social API ScrapeCreators sells. Supadata and ScrapeCreators are stronger choices when platform breadth matters more than YouTube depth.
Why Tapline fits production caption pipelines
Tapline is our product, and its strongest case starts at volume. The $199 Growth plan includes 500,000 caption-backed transcripts per month. The $499 Pro plan includes two million. Failed requests do not consume credits, which keeps the useful-result cost predictable when a dataset includes private videos, disabled captions, or deleted IDs.
The same key and credit pool cover ten published YouTube endpoints. A pipeline can find videos, read their metadata, fetch subtitle tracks, inspect channels and playlists, collect comments, list formats, and return the most-replayed heatmap without adding another vendor or response shape. Most calls cost two credits; channel info costs three.
Tapline has no paid tier below $49, does not create a transcript when captions are missing, and does not cover TikTok, Instagram, X, or Facebook. A small script, a captionless archive, or a multi-platform dataset should use one of the options below.
Where the hosted alternatives win
Supadata
Videos without captionsSupadata covers YouTube, TikTok, Instagram, X, and Facebook. It is the only option among these seven that advertises AI transcription when a video has no captions, priced at two credits per minute of video. Choose it for captionless or multi-platform collections. Its credits do not roll over, a transcript-unavailable 206 costs one credit, and its public docs do not list comments, heatmaps, or video formats. See the Supadata comparison.
ScrapeCreators
Prepaid multi-platform workScrapeCreators sells prepaid packs for APIs across major social networks. Credits never expire, cache hits cost nothing, and the service advertises no rate limit, which suits uneven workloads. The pricing page does not break out the credit cost of every endpoint, so the transcript estimate is less certain than a vendor with one published rate per call. Test the endpoints you need before buying a large pack.
TranscriptAPI
The smallest paid startTranscriptAPI starts at $5 per month and includes transcripts, search, channel videos, playlist videos, and an MCP server. One credit represents a successful request, and unused credits remain paused if you cancel. For a small YouTube tool or agent integration, that bundle may be all you need. The base plan includes only 1,000 requests, so top-ups make it progressively more expensive than Tapline at larger monthly volumes.
Apify
No-code and marketplace coverageApify is a marketplace rather than one transcript API. It makes sense when your team already uses actors, needs scheduled jobs through Make or Zapier, or needs a site the dedicated vendors do not cover. Pricing is harder to compare because an actor fee can sit beside platform, compute, and proxy charges, while quality varies by developer. The Apify comparison separates those costs.
The free library and official API solve different jobs
youtube-transcript-api
Local developmentThe Python library is free, MIT licensed, and handles existing manual or auto-generated captions without a browser. For a laptop script or desktop app, start here. Its README warns that YouTube blocks many cloud-provider IP ranges, so AWS, GCP, and Azure deployments can hit RequestBlocked or IpBlocked unless you add rotating proxies and maintain them. The hosted API guide covers that tradeoff.
YouTube Data API v3
Official metadata operationsGoogle's API is the right choice for supported metadata, channel, playlist, and comment operations when its quota and data policies fit your workload. It is not a third-party transcript API: captions.download requires permission to edit the video.search.list costs 100 units against the standard 10,000-unit daily quota, which works out to about 100 searches only if no quota is spent elsewhere. See the official API comparison.
Method and sources
We used the public pricing pages and documentation for Tapline, Supadata, ScrapeCreators, TranscriptAPI, and the Apify streamers actor. The equal-workload table uses the cheapest listed monthly plan or stack of prepaid packs that covers each volume. Annual discounts are excluded. "Not published" means we could not find the policy or capability in that vendor's public docs, not that it is impossible.
The free-library notes come from the project's README. The official API limitation comes from Google's captions.download documentation.
Tapline publishes this page and is one of the options compared. Tapline is not affiliated with, endorsed by, or sponsored by YouTube or Google.
FAQ
What is a YouTube transcript API?
A REST API that accepts a YouTube video ID or URL and returns the video's caption text as JSON, usually with a timestamp on each line. Hosted services handle retrieval, cloud IP reliability, rate limits, and billing. Google's own captions.download method only works when the caller has permission to edit the video.
What is the best YouTube transcript API?
For production-scale, caption-backed workloads, Tapline is the best-value hosted option in this comparison. Its $199 Growth plan includes 500,000 transcripts, failed requests cost zero credits, and the same account covers comments, engagement heatmaps, video formats, and subtitle tracks. Supadata is better when videos have no captions. At the $5 price point, TranscriptAPI includes 1,000 requests against Supadata's 300. The free youtube-transcript-api library is a better fit for local work.
Can I get YouTube transcripts for free?
Yes. The youtube-transcript-api Python library is free and MIT licensed, though requests from AWS, GCP, and Azure IP ranges are often blocked without proxies. Tapline, Supadata, ScrapeCreators, and TranscriptAPI also publish free credit allowances that are enough to test a small set of videos before paying.
Why can't I use the official YouTube API for transcripts?
Because the captions.download method requires permission to edit the video. For a video you do not own it returns 403 forbidden. No quota increase changes that, because it is a permissions boundary rather than a rate limit.
How much does a YouTube transcript API cost?
Full-utilization rates in this comparison run from $0.25 to $2.40 per 1,000 caption-backed transcripts before annual discounts, but the plan bill matters more. TranscriptAPI costs $27.50 for 10,000 requests with monthly top-ups. Tapline costs $199 for up to 500,000. Marketplace options can add platform, compute, and proxy fees.
Which YouTube transcript API works on AWS Lambda?
A hosted transcript API is the practical choice on AWS Lambda because your function calls the vendor rather than YouTube directly. The free youtube-transcript-api library often runs into blocked AWS IP ranges unless you add rotating proxies and maintain them.
Do YouTube transcript APIs charge for failed requests?
Policies differ. Tapline charges zero credits for a failed request, and TranscriptAPI defines one credit as one successful request. Supadata charges one credit for a 206 Transcript Unavailable response. ScrapeCreators and the Apify actor do not publish an equivalent failed-request policy on the pricing pages used for this comparison.
Which YouTube transcript API returns the most other YouTube data?
Tapline publishes the broadest documented set of YouTube-specific endpoints among the hosted transcript APIs compared here. Its ten endpoints cover transcripts, video metadata, search, subtitle tracks, channel info, channel videos, playlists, comments, video formats, and the engagement heatmap under one credit pool.
To compare the response with your own video, use the free transcript tool or inspect every field in the YouTube API docs.