The AI music generation race in 2026 is no longer about "can it make a sound." It is about three hard questions: does it sound good, does it have vocals, and can you use it commercially. Open any tool list and there are easily a dozen music products, all jostling for attention: Suno, Udio, Stable Audio, Haimian Music, MusicGen… newcomers can't tell them apart. This piece picks five of the most representative and compares them side by side, giving you a per-scenario verdict instead of a vanity ranking.
One thing up front: every comparison below is a representative comparison based on each tool's official docs, pricing pages, and public reviews, not a benchmark I ran myself. Prices and features move, and by the time you read this something will have updated, so treat the official latest word as the source of truth, not this article.
One more premise: AI music generation splits into two technical routes. One is "text-to-song," where you describe a scene in text and get a full song with vocals and lyrics; Suno, Udio, and Haimian Music take this route. The other is "text-to-track," which outputs pure instrumental music; MusicGen and Stable Audio lean this way. The two routes serve completely different scenarios, and we will cover them separately.
1. Why you need to compare music tools side by side in 2026
The reason the field is crowded is that the category filled three long-standing gaps in 2024-2026. First, vocals. Early AI could only produce instrumental music; now Suno v4.5 and Udio generate complete songs with sung lyrics, no longer just "BGM machines." Second, audio quality. From robotic low-fidelity output to near-studio grade, the top tiers of Udio and Suno can already fool a casual listener's ear. Third, duration. From ten-second clips to three- or four-minute complete tracks, long enough for a standard song.
But even as the gaps closed, the five tools each bet on a different direction, and none is the all-rounder. Suno bets on popularity and ease of use, Udio on audio quality and professionalism, Stable Audio on sound effects and instrumental scoring, Haimian Music on Chinese and free access, and MusicGen on open source and local deployment. Hold those bets in your head and you will not need a ranking; you will just look at your own job.
The five questions to ask yourself before choosing: do you want a full song with vocals or pure instrumental, are your lyrics Chinese or English, is this commercial or personal, is your budget zero or can you pay monthly, and do you need local deployment with data staying on your machine? Nail those five and the choice below is basically locked.
2. The five contenders (data as of 2026-07-31)
Here is the lineup. Pricing is from each vendor's site or pricing page; open-source status and model versions are from official sources. Reachability of overseas tools from China and the specific terms of Haimian Music should be verified on their respective sites.
| Tool | Vendor | Latest model | Open source | Free tier | Starting price | Commercial license | Deployment |
|---|---|---|---|---|---|---|---|
| Suno | Suno Inc. | v4.5 (2025) | No | 50 credits/day (watermarked) | $10/mo | Paid plans allow commercial | Web/Discord/App |
| Udio | Udio Inc. | v1.5 (2025) | No | Limited daily credits (watermarked) | $10/mo | Paid plans allow commercial | Web |
| Stable Audio | Stability AI | Stable Audio 2.0 (2024) | Partial (Open version has open weights) | Limited monthly quota | ~$12/mo (third-party, verify on site) | Paid plans allow commercial | Web/API |
| Haimian Music | Haimian Music | - | No | Free (verify on site) | Free (verify on site) | Needs confirmation | Web |
| MusicGen | Meta | MusicGen Large (2023) | Yes (weights CC-BY-NC-4.0) | Unlimited (run locally) | Free (local) | Non-commercial (CC-BY-NC) | Local/API |
Three details to call out. First, on free tiers, Suno and Udio give real free daily credits but watermarked and non-commercial, Haimian Music is currently free but commercial terms need confirmation, MusicGen's free means running it yourself (you pay for electricity and the GPU), and Stable Audio's free quota is limited. Second, on open source, only MusicGen is fully open (but with a non-commercial weight license), Stable Audio has an Open version with open weights, and the other three are all closed. Third, commercial licensing is the biggest dividing line: Suno, Udio, and Stable Audio paid plans generally grant commercial rights, MusicGen's weights are CC-BY-NC-4.0 (non-commercial) so even what you generate locally cannot be sold, and Haimian Music's commercial terms need separate confirmation.
3. Side by side: six dimensions laid flat
Lay the official descriptions flat and line them up across six dimensions. This table is a representative comparison based on official docs and public descriptions, not a hands-on benchmark. Audio quality and controllability can't be measured on one numeric scale, so the table is qualitative.
| Dimension | Suno v4.5 | Udio v1.5 | Stable Audio | Haimian Music | MusicGen |
|---|---|---|---|---|---|
| Audio quality | High (near commercial) | High (acknowledged leader) | Upper-mid | Mid | Mid (adequate for instrumental) |
| Vocals/lyrics | Strong (full vocals + lyrics) | Strong (full vocals + lyrics) | None (instrumental/SFX) | Strong (good Chinese lyrics) | None (instrumental) |
| Max duration | ~4 minutes | ~2-3 minutes | ~3 minutes | Per platform | ~30s-2min (varies by version) |
| Controllability | Mid (lyrics/style specifiable) | Mid-high (more fine-tuning) | Mid (text + duration control) | Mid | Mid-high (text/melody conditioning) |
| Chinese lyrics | Weak (English-first) | Weak (English-first) | N/A | Strongest (native Chinese) | Weak (English-trained) |
| Price | $10-30/mo, free daily credits | $10-30/mo, free daily credits | ~$12/mo, free tier | Free (verify on site) | Free locally (needs GPU) |
| Open source | No | No | Partial (Open version) | No | Yes (CC-BY-NC weights) |
| Best for | Content creators/short video | Pro musicians/audiophiles | SFX/BGM needs | Chinese users/beginners | Developers/researchers/local |
Mind the apples-to-oranges. Vocals and lyrics are the home turf of Suno, Udio, and Haimian Music; they generate complete songs with singing. Stable Audio and MusicGen produce instrumental only, no vocals; if your need is "a song with a human voice," the latter two are out. Chinese lyrics are Haimian Music's home turf as a native Chinese product; the others need English prompts to perform. Max duration shifts across platforms, so treat the figures as approximate.
4. One by one: each tool's best range
Suno v4.5: the most popular text-to-song contender, ceiling on ease of use
Suno has the largest user base in AI music generation. v4.5, released in 2025, is the steadiest and easiest pick for generating songs. The free tier gives 50 credits a day (watermarked, non-commercial), Pro is $10 a month for 2,500 credits, Premier is $30 a month for 10,000 credits, and paid plans grant commercial rights. The v4.5 generation improved vocal naturalness, lyric intelligibility, and genre coverage; from pop to rock to electronic to folk, a decent description gets a decent song.
Its bet is "popular plus easy." If you are a short-video creator, podcaster, or just want to quickly turn text into a song with vocals, Suno has the lowest barrier. The tradeoffs are clear: audio quality is good but not studio-grade (Udio wins there), Chinese lyrics underperform (English prompts work better), and controllability is mid. Suno was also sued alongside Udio by the RIAA in 2024 over training-data infringement; the lawsuit is not fully resolved, and commercial users should track its progress.
Best for: short-video creators, content producers, and anyone who wants to turn out a song fast. Pro musicians who find it too coarse should look at Udio.
Udio: the audio-quality ceiling, the byword for professionalism
Udio was founded by former Google DeepMind researchers and launched in 2024. It is widely regarded in the AI music community as the tool whose audio quality comes closest to commercial studio grade. Pricing is close to Suno's: free daily credits with watermark, Standard $10 a month, Pro $30 a month, paid plans granting commercial rights. Udio's strength is sonic texture and detail: vocal breath, instrument separation, and mixing spaciousness all feel more "real" than the same-generation Suno.
Its bet is "quality plus professionalism." For picky-eared musicians, pros making demo tapes, or anyone who feels Suno's output is "not quite there," Udio is the upgrade. The cost is a slightly steeper learning curve than Suno, equally weak Chinese support, and sometimes slower generation. Like Suno, Udio was sued by the RIAA in 2024 over training data; check the lawsuit's progress and the latest license terms before going commercial.
Best for: professional musicians, audiophiles, and creators who need near-commercial-grade demos. Beginners and zero-budget players will find Suno or Haimian Music friendlier.
Stable Audio: sound effects plus BGM, the practical instrumental route
Stable Audio is made by Stability AI (the company behind Stable Diffusion). It takes the text-to-track route, specializing in instrumental scores and sound effects. Stable Audio 2.0 can generate tracks up to about 3 minutes, covering both music and SFX. It also has a Stable Audio Open version with open weights you can run locally, though the license terms should be checked on the official site. The commercial web version has a free monthly quota (limited), and paid plans run about $12 a month (third-party info, verify on site), granting commercial rights.
Its bet is "SFX plus versatility." If you want background music, ambient effects, transitions, or game scores rather than a song with vocals, Stable Audio is more on-target than a text-to-song tool. The cost is no vocals or lyrics, overall quality below the top tier of Suno and Udio, and a limited free tier.
Best for: video creators, game developers, and podcasters who need BGM and sound effects. If you want a full song with vocals, look at the first two.
Haimian Music: native Chinese, the friendliest free entry for beginners
Haimian Music is one of the more representative domestic AI music generation products. Its two biggest labels are Chinese and free. Chinese lyric understanding and generation is the strongest of the five: describe the style and content in plain Chinese and it produces a song, no translation needed. It is currently free to use, though whether the free tier carries a watermark and what the commercial terms are should be confirmed on the official site.
Its bet is "Chinese plus low barrier." For Chinese users, short-video creators, and complete beginners, Haimian Music has the lowest cost of entry: Chinese interface, Chinese lyrics, no VPN needed, free to try. The cost is that audio quality trails Suno and Udio, controllability and feature depth are basic, commercial terms are unclear, and it is not open source. Its features and terms update frequently, so check the official page.
Best for: Chinese users, beginners, and creators who want songs with Chinese lyrics. If you want top-tier audio quality or local deployment, it won't get you there.
MusicGen: the open-source king, the only real answer for local deployment and non-commercial research
MusicGen is an open-source music generation model from Meta (Facebook Research), with the GitHub repo facebookresearch/audiocraft, available in small, medium, large, and melody versions. It takes the text-to-track route, producing instrumental only, no vocals. Its biggest advantage is being open source: you can pull it down, run it locally, do research, and modify the model. Its biggest limitation is also the license: the model weights use CC-BY-NC-4.0, explicitly non-commercial.
Its bet is "open plus local." Open source means three things: your data never leaves your machine (a hard requirement for privacy-sensitive work), you can modify the model for research, and you can run it free forever (you pay for electricity and the GPU). For researchers, developers, and teams running music-generation experiments, MusicGen is the lowest-barrier open-source option. The cost is instrumental only (no vocals), mid-tier audio quality, a CC-BY-NC license that rules out commercial use entirely, and a local-run requirement for a capable GPU and Python environment.
Best for: researchers, developers, and teams that need local deployment or music-generation experiments. If you need commercial use or songs with vocals, MusicGen is not for you.
5. Three scenarios: slot yourself in
Scenario 1: Short-video scoring (BGM / transitions / intro-outro)
You need background music or sound effects lasting ten seconds to two or three minutes, no vocals, with clean licensing. First pick: Stable Audio. It specializes in instrumental and SFX, paid plans grant commercial rights, and the short clips are ready to use. Runner-up: MusicGen (free locally), but the CC-BY-NC license blocks commercial use; fine for personal projects or research, a landmine in a paid video. Zero budget and no desire to deploy? Haimian Music's free tier is worth a try, but confirm commercial terms first. Suno and Udio can also produce instrumental clips, but their strength is vocal songs; using them for BGM is overkill.
Scenario 2: Complete songs (full tracks with vocals and lyrics)
You need a song with singing, lyrics, and a verse-chorus structure. First pick: Suno v4.5. Steadiest output, easiest onboarding, widest genre coverage, and the free tier lets you try. For higher audio quality, pick Udio, the acknowledged ceiling, but with a steeper curve and slower generation. For Chinese-language lyrics, pick Haimian Music, the strongest at native Chinese; English tools underperform with Chinese lyrics. Stable Audio and MusicGen are out here: they don't generate vocals.
Scenario 3: Commercial use (client scoring / ads / brand assets)
You need music with clear licensing, usable commercially, that won't get you sued. First pick: Suno or Udio paid plans ($10-30/month), which grant commercial rights with relatively clear terms. Stable Audio paid plans also grant commercial rights, suitable for commercial BGM and SFX. Haimian Music's commercial terms need confirmation on the official site; don't assume "free means commercial." MusicGen is out: CC-BY-NC-4.0 explicitly prohibits commercial use, even for what you generate locally. Note also that both Suno and Udio have ongoing training-data lawsuits; track the progress and latest licenses before going commercial. In commercial scenarios, always read the license terms before you act; "I paid" is not a shield.
6. Four pitfalls: licensing, watermarks, the local barrier, and pricing units
First, commercial licensing is the biggest trap. MusicGen is open source, but its weights are CC-BY-NC-4.0, non-commercial; using its output commercially is a violation, so don't be fooled by the word "open source." Suno, Udio, and Stable Audio paid plans generally grant commercial rights, but specifics vary by tier and use. Haimian Music's commercial terms need separate confirmation. With Suno and Udio's training-data lawsuits unresolved, always read the latest license before commercial use; don't assume paying means free use.
Second, free-tier watermarks and limits are hidden traps. Suno and Udio free tiers are watermarked and non-commercial; whether Haimian Music's free tier carries a watermark needs checking. Free is fine for tinkering, but once you go commercial or scale up, watermarks and caps will bite; switch to paid when that happens.
Third, don't underestimate the local-deployment barrier. MusicGen running locally is a real advantage, but it needs a capable GPU and a Python environment, and debugging has a learning curve. Stable Audio Open also requires local-deployment ability. If you lack the GPU or don't want to tinker, don't force local for "open and free"; just use the web version and pay per use, which is far less hassle.
Fourth, pricing units differ, so don't compare raw numbers. Suno and Udio are monthly subscription plus credits ($10-30/month), Stable Audio is also monthly subscription, Haimian Music is free, and MusicGen is free locally but costs hardware. Monthly subscription and free-local can't be compared directly; convert by your actual volume and need: commercial work means paid plans, research means MusicGen locally, free trial means Haimian Music or Suno's free tier.
FAQ
Q: Which one should a complete beginner pick? A: For a full song with vocals, Suno: easiest to use, free tier gives 50 credits a day to try. For Chinese users or Chinese lyrics, Haimian Music: Chinese interface, free, no VPN. For pure instrumental BGM, Stable Audio.
Q: Which one is completely free? A: For songs with vocals, Haimian Music (free, commercial terms need confirmation) or Suno's free tier (50 credits a day, watermarked, non-commercial). For pure instrumental, MusicGen locally (free, but needs a GPU and CC-BY-NC blocks commercial use). Stable Audio has a free monthly quota but it is limited.
Q: Which handles Chinese lyrics best? A: Haimian Music, a native Chinese product, understands and generates Chinese lyrics best. Suno and Udio are English-first; Chinese lyrics underperform, so use English prompts. MusicGen and Stable Audio don't generate vocals, so lyrics aren't relevant.
Q: Whose commercial license is safest? A: Suno, Udio, and Stable Audio paid plans generally grant commercial rights (per their terms). Haimian Music's commercial terms need confirmation. MusicGen's weights are CC-BY-NC-4.0, explicitly prohibiting commercial use even for locally generated output. Note that Suno and Udio have ongoing training-data lawsuits; track the latest before going commercial. Always read the latest license before commercial use.
Q: Which one for local deployment? A: MusicGen, from Meta, open source, runs locally, suitable for research, GitHub repo facebookresearch/audiocraft. Needs a capable GPU and Python environment; note the weights are CC-BY-NC non-commercial. Stable Audio Open can also run locally. If you need commercial use, skip the local route and use the web version's paid plan.
References
- Suno official site and pricing: https://suno.com
- Udio official site: https://www.udio.com
- Stable Audio official site (Stability AI): https://stableaudio.com
- MusicGen open-source repo (audiocraft): https://github.com/facebookresearch/audiocraft
- MusicGen model card (HuggingFace): https://huggingface.co/facebook/musicgen-large