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Surfer SEO Alternatives

Other options in the same category as Surfer SEO (Writing、Research), sorted by free plan and Chinese support:

Has a free plan

Chinese support: Full support

Research and report-writing: the free tier's basic search is enough. Need Pro search and source-quality vetting: billed annually at US$200 is more economical than monthly. But the enterprise plan's price hasn't been officially confirmed -- be sure to verify on the official site yourself before signing.

Perplexity 免費額度細節

Has a free plan

Chinese support: Full support

適合需要頻繁搜尋和檔案分析,且預算有限的貓,特別是選擇年繳方案,長期使用更經濟實惠。

Felo 免費額度細節

Has a free plan

Chinese support: Full support

Students, researchers, and data organizers: the free version is sufficient, no need to think twice. Only consider AI Plus for US$4.99 if you need a higher quota. However, don't subscribe to Ultra just for NotebookLM; first confirm that you really need Gemini's other features.

Gemini Notebook 免費額度細節

Has a free plan

Chinese support: Partial support

Developers try out models and create prototypes: use the free quota directly, no need to think about it. Before going into production, calculate the excess fee rate carefully, as Search and Maps have different prices, don't get them mixed up.

Google AI Studio 免費額度細節

Has a free plan

Chinese support: Full support

Students: Plus is free after verifying school email, no reason not to use it. General users: Plus at US$10/month is sufficient. Those who need Notion Agent and AI meeting recording: Business at US$20/month. Don't forget that annual payment saves 20%.

Notion AI 免費額度細節

Has a free plan

Chinese support: Not supported

Livedocs 免費額度細節

Chinese support: Partial support

The free quota isn't published on the official site, and this site won't speculate. If you want to evaluate it, you'll have to register and test it yourself — treat "how much the trial actually gives you" as the first thing to confirm, before deciding whether to pay the US$29.

Copy.ai 免費額度細節

Has a free plan

Chinese support: Full support

If you can code a bit and want free quant backtesting, just clone it and use it — zero subscription fee. But don't think "free" means fully included: advanced data and risk calculations require buying QVeris, and the price is quote-only. If you don't self-host, this tool isn't for the average investor.

Vibe-Trading 免費額度細節

Has a free plan

Chinese support: Full support

If you need high translation quality and want to preserve document formatting, try the free version's 50,000 characters first. But we couldn't confirm the paid plan prices firsthand — sources contradict each other — so before subscribing, be sure to check the current plans and prices on the official site yourself.

DeepL 免費額度細節

Has a free plan

Chinese support: Not supported

Frequently writing English emails and reports: Free version offers 100 times of AI generation for trial. Writing daily: Pro US$12/month is worthwhile, with a 7-day free trial to verify. However, annual payment discounts are unclear, so check the official website before subscribing. Only English editing is supported, Chinese requirements are not applicable.

Grammarly 免費額度細節

Has a free plan

Chinese support: Not supported

Developers need to analyze SEO: self-hosted with zero cost (plus API fee starting at US$6/month). For those who don't want to self-host: managed version with a low threshold of US$10/month, and quota can be accumulated. However, pay-as-you-go pricing can lead to overbudgeting, so it's better to use the initial quota to test the cost before scaling up.

OpenSEO 免費額度細節

Chinese support: Not supported

No free version, requires a card on file (verified in testing), starting price US$99 — put these three facts together and the risk is fairly high for anyone wanting to try it on a whim. If you really want to try it, note down the sign-up date and decide within 7 days whether to cancel.

Writesonic 免費額度細節

Has a free plan

Chinese support: Not supported

If you're only writing short copy in one language: the free version's 10,000 characters per month might be enough, no need to pay. If you need multiple languages or plagiarism checks: the US$9 Unlimited plan has the lowest entry point in its category.

Rytr 免費額度細節

Chinese support: Not supported

For personal use: the US$69 threshold is on the high side — comparable tools like Rytr at US$9 or Copy.ai at US$29 are more reasonable. For businesses needing a unified brand voice and multi-user collaboration: that's exactly who this is designed for. The trial doesn't require a card, so you can safely try it for 7 days.

Jasper AI 免費額度細節

Chinese support: Not supported

There's no long-term free plan — the trial is limited to one day. If you're serious about trying it, plan out all the keywords and time range you want to track before registering, and finish it in that one day. If you're not sure you'll use it, factor in the US$50-and-up threshold first.

buzzabout 免費額度細節

Has a free plan

Chinese support: Not supported

QuillBot 免費額度細節

先看看 Surfer SEO 的免費額度夠不夠用