Captions AI vs Submagic: caption styles, prices and video limits

Captions AI vs Submagic in one paragraph

Both tools exist to make talking-head video look finished: transcribe the speech, burn captions into the frame, highlight each word as it is spoken. Captions describes itself as an editor that also does captions, eye contact correction, music and translation, and it runs on iOS, Android and web. Submagic describes itself as an AI caption generator that also does B-roll, auto zoom, silence removal and a text-based editor. Each has a way to find clips in a long video, but in both cases it sits above the entry level: Clips on Captions' Max plan, and the Magic Clips add-on on Submagic.

So the question is rarely which has nicer captions. It is how long your video is, how often you post, and whether you want to start free. The table lists the numbers that decide that, and KeyMo appears as a third column because it handles the long-recording case differently.

Plans, limits and caption styles side by side

Caption polish: what each one gives you

Captions says its caption feature offers 100+ styles and 100+ languages, with animated word-by-word text, custom fonts and colours, and automatic emojis. The catch is that only one template, Eclipse, is available on the Free plan, and a project that uses caption styles needs a paid plan to export.

Submagic's caption page lists animated presets that highlight word by word, a Brand Kit for fonts and colours, and a custom words dictionary. It claims transcription in 123 languages, which is a marketing figure from the vendor. It also sells editing aids on the same plans: text-based cutting, silence removal, auto zoom, B-roll and eye contact correction appear in its plan comparison.

Both vendors make accuracy claims on their own pages (Submagic says 99%), and the pages we read show no test behind them, so this page does not rank them. Run the same 60-second clip through each and compare the results yourself.

The length cap is the real difference

Submagic's plans are measured in videos, not minutes, and each plan has a maximum length per video. Take a 4-minute talking-head recording. It does not fit Starter's 2-minute cap, so you need Pro at $39 a month, or $23 billed yearly. A 25-minute interview needs Business at $69 a month, or $41 billed yearly. A 60-minute podcast is over every Submagic cap listed.

The Captions pages we read give no per-plan length cap, but limits depend on the feature. Its help centre gives 10 minutes for same-language captions on iOS and desktop (5 on Android), 60 minutes per file on general import and 3 hours for Clips. A 60-minute podcast fits the import limit and Clips, but Clips requires Max at $24.99 a month and its credit cost is not published, and the page does not say whether the 10-minute captioning limit applies to it. If your videos are mostly 30 to 90 seconds, Submagic's caps never matter, and the choice comes down to price and caption look.

• Posting 15 short clips a month, each under 2 minutes: Submagic Starter's 15 videos covers it, at $19 monthly or $12 billed yearly.
• Posting 30 to 40 short clips a month, each under 5 minutes: Submagic Pro, 40 videos for $39 monthly or $23 billed yearly.
• Posting a few clips and editing by hand: Captions' Free plan, if basic trimming and one caption template are enough.

Strengths and weak spots

• Captions has a free plan, lists 100+ caption styles on Max, and offers four output ratios (9:16, 16:9, 1:1 and 4:5) against the three Submagic's pages name.
• Captions is harder to price: its pages disagree on plans, yearly pricing is missing, and the cost of a Clips run is unpublished. Credits are forfeited when a cancelled billing period ends, and they are spent even on projects you never export.
• Submagic has a plain price ladder and states 4K, 60 fps export on Business, while Captions does not state a maximum export resolution. Its three paid plans carry no watermark.
• Submagic's limit is length: even Business stops at 30 minutes per video, and no free plan appears on its pricing page.
• Submagic lists its prices per member per month, so check the seat count before you budget for a team.

Where KeyMo fits

KeyMo is not a caption editor for a clip you already cut. A source video has to be at least 5 minutes, up to 3 hours, and KeyMo finds up to 15 clips in it, scores each out of 10, keeps only those at 7 or higher, and captions them in one of 12 styles. If you record a long podcast and want clips, that is the gap between the two tools above. If you only need captions on a 40-second video, KeyMo is the wrong tool.

Cost is $12 for 300 source minutes or $29 for 900, with no free plan. For a side-by-side with Submagic alone, see KeyMo vs Submagic, and for a pair that includes Opus Clip, see Captions vs Opus Clip.

A decision rule

1. If your video is under 2 minutes and you post often, compare Submagic Starter against Captions Free. Try both on one clip.
2. If your video is 2 to 30 minutes and you want captions only, Submagic Pro or Business works, but check Captions' per-feature limit first.
3. If your video is a long recording and you want the best moments cut out, skip the caption-first tools and use a clipper such as KeyMo.
4. If you want to predict your monthly use, Submagic's pricing page converts credits to videos (3 credits per video). Captions' credit cost depends on the feature, and Clips is not listed.