Frase IO Review: Is It the Best SEO Tool in 2025?

Ever spent hours researching and writing what you thought was going to be the perfect SEO article… only to watch it get buried on page four of Google within just a few weeks?

Yeah, we’ve been there too. 

Tools like Frase IO promise to help you prevent that from happening ever again. But does this AI-powered tool actually live up to the hype in 2025?

Or is it just another “AI SEO helper” that still leaves you cleaning up robotic text? 

In this Frase.io review, we’re putting the platform to the test, evaluating its SEO capabilities, accuracy, and whether or not its AI-generated content can truly compete online (and pass AI detection). 

TL: DR – Frase IO is great for SEO research, keyword analysis, and generating quick first drafts. However, the platform’s AI-written content often gets flagged by AI detectors.

For the best results, use Frase for content planning and pair it with Undetectable AI’s Humanizer or Stealth Writer tools to make sure your content sounds natural.

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Key Takeaways

• Frase.io combines SEO analysis and AI writing to create optimized briefs and drafts fast.

• It excels in keyword research, SERP analysis, and structuring content for SEO success.

• Generated content scores high for SEO but often fails AI detection tests (74–81% AI).

• The platform lacks a built-in AI detector or humanizer, requiring third-party tools.

• Best used alongside Undetectable AI to humanize text and ensure it passes AI checks.

• Ideal for marketers who want efficient SEO research but still plan to edit final drafts.

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What Is Frase IO?

Frase.io is sort of like a cross between Surfer SEO and a mini ChatGPT.

All you have to do is tell Frase what topic or keyword you want to target, and then the platform can automatically:

• Analyze the top-performing pages for that keyword.
• Generate a content brief based on competitor structure and search intent.
• Suggest semantic keywords, headings, and questions to answer in FAQs.
• And (if you want) draft full-length AI-written content using its built-in writer.

These automations make life easier for marketers, SEO specialists, and content teams who need to generate SEO-optimized content super fast. 

Overview of Frase IO SEO Capabilities

Frase primarily focuses on on-page SEO.

So when you enter a keyword, Frase immediately scans the top-ranking pages in Google and creates a content outline based on what’s already performing well.

Here’s a quick overview of the type of actionable insights you’ll get from the platform:

• Search intent and the underlying purpose of keyword queries.
• Common FAQs and related questions that competitors are answering.
• How frequently top pages mention your target terms (i.e., keyword density)
• How H2 and H3 heading structures are typically organized across the top results.
• Average word count and readability of top articles that cover your chosen topic.

This feature alone can save hours of manual SEO research, especially if you’re building a full content strategy with hundreds of articles. 

If you’ve ever used Surfer SEO, the setup with Frase will be very familiar. But what sets Frase apart is that you can generate the outline, brief, and draft all in the same platform. 

However, while Frase’s SEO intelligence is strong, its AI writing engine still depends on GPT-based outputs.

And as we’ve seen in many tools like this, AI-generated text often struggles to sound fully human, especially when tested with advanced AI detectors. 

Key Features of Frase IO

Frase actually packs a lot of features into a single dashboard.

Here’s a closer look at the platform’s standout features:

• Content Briefs: Automatically generate briefs based on top SERP results. 
• Content Editor: Use AI to rewrite and refine drafts. 
• Content Optimization Score: Remove and rephrase content to improve your content score, based on real-time data.  
• SEO Analytics: Track how your articles perform after they’ve been published. 
• Content Opportunities: Get recommendations on how to improve your content before your traffic starts to drop. 

Beyond these core features, Frase also includes helpful extras like AI-powered question research, collaboration tools, third-party integrations, and built-in brand voice guidelines.

Frase.io Pricing and Plans

Like most SEO tools, Frase uses a subscription model.

Here’s the current price breakdown:

If you’re not quite ready for a full subscription, Frase also offers a “Pay as you go” plan. However, this option is just for the AI document writing tool, which starts at $2 per document.

Frase IO Accuracy and Reliability

To test this tool, we signed up for a free trial and generated our own piece of content.

The goal of this test was to:

• Check the overall quality of the content produced by Frase IO and 
• See if that content could pass modern AI detectors. 

We started by prompting the tool to write a blog post about the best smartphone cameras.

The platform then researched and analyzed the top-performing posts with that keyword phrase. 

Once the analysis was complete, Frase then generated an outline for us. From there, all we had to do was click “Generate Article” to draft a full 2,000+ word article.

For the purposes of this test, we didn’t make any edits to the draft. But in theory, this would be the time where you can read it through, verify any key facts, and tweak the piece so it’s exactly how you want it. 

Once your draft has been generated, you’ll see that it has a content or “topic” score, which is a measurement of how well your content covers your topic.  

Here, you can see our article has a content score of 89%, which is way higher than the average score of 53%.

However, even though the content is well-optimized from an SEO perspective, it still wasn’t quite what we were looking for. 

To start, the suggested title was “The Best Smartphone Cameras of 2024”. Considering it’s 2025 at the time of writing this review, that’s already a red flag.

While the structure was there, the information wasn’t current enough to be relevant for readers. 

Next, we wanted to see if this piece of content could be detected by an AI detector.

To test this, we ran it through three different AI detectors, and here’s what we found: 

Grammarly AI Detector	Scribbr AI Detector	Undetectable AI
74% AI	77% AI	81% AI

So while the article may check every SEO box, it still reads like it was written for an algorithm (and AI detectors can pick up on that). 

Of the three AI detectors we tested, our own AI detector picked up on the most AI patterns.

This wasn’t a surprise, given that Undetectable AI’s detector is ranked among the top five most accurate AI detectors in ZDNet’s independent study. 

And the best part about using Undetectable’s AI detector? There’s a built-in humanizer tool, so we can instantly rewrite any parts flagged as AI.  

Pros and Cons of Frase IO

Like a lot of all-in-one SEO platforms, Frase IO has plenty of strengths, but it’s obvious that you may not be able to use it for everything it says it can do.

Here’s a balanced breakdown of what works well and where the platform falls short. 

Frase IO: Pros and Cons
Pros	Cons
Easy to create a well-structured and thorough brief in minutes. Combines keyword research, optimization, and AI writing all in one dashboard.  Identifies missing subtopics and questions that can help you match search intent.  Clean and user-friendly layout.	Generated content still reads like AI and fails most advanced AI detection tests.  No built-in AI detector or humanizer tool, so you’ll need to use something else for that.  Limited number of rank-ready AI documents per month without a custom plan (which can be expensive).

Frase IO vs Undetectable AI

Frase works great for analyzing SERPs, generating topic briefs, and creating drafts quickly.

However, if you want to publish content that won’t trigger AI detection systems or sound robotic to readers, you’ll need an extra step for editing. 

Here’s how both Frase IO and Undetectable AI can work together:

Step 1: Use Frase IO for keyword research, topic briefs, and generating your initial drafts. 

Step 2: Then, run your draft through Undetectable AI’s tools to elevate it and make sure it passes AI detectors. 

• Use AI Detector to check if your content will be flagged as AI content. 
• Use AI Paraphraser to rephrase repetitive or mechanical text. 
• Use AI SEO Writer to polish tone, flow, and readability. 
• Use AI Stealth Writer to rewrite passages flagged as AI. 

In short, Frase can help you get a decent, well-optimized draft together quickly. And then Undetectable AI can help you make sure your content sounds human and is safe to publish. 

Try the AI Detector and Humanizer tools in the widget below!

FAQs About Frase IO

Our Final Verdict on Frase IO

So, is Frase IO the best SEO tool in 2025?

It really depends on what you need it for. 

Frase excels at the SEO research and structuring side of the content creation process.

So if your main goal is to speed up the planning process and generate some decent first drafts that might rank (if they don’t get flagged as AI), then Frase can help get you there. 

However, if you want to create high-quality, human-grade content, you’ll still need to edit your drafts yourself.

And if you want to do that quickly and efficiently, the best tool to pair Frase with is Undetectable AI’s suite of AI detection and humanizing tools.