Ahrefs
Paid API plan starts at
$129/ month
Lite · billed monthly
- Included
- 200,000 API units / month
- Request limit
- 100 rows / request on Lite
- Usage
- Rows × selected field costs; 50-unit request minimum
Ahrefs vs Similarweb: choose search visibility or whole-site traffic
Ahrefs
- What it is
- An SEO platform and API for backlinks, organic rankings and search visibility data.
- Best for
- Examining a site’s ranking pages and backlink profile with date-specific data.
- Typical output
- Keywords, ranking URLs, positions, volume and traffic estimates.
Similarweb
- What it is
- A digital intelligence platform for estimating website audiences and traffic sources.
- Best for
- Understanding a competitor’s total traffic, referral channels and audience trends.
- Typical output
- Monthly visit estimates and channel or audience metrics.
Need both?
Paste this prompt into your agent.
set up https://glasser.ai/SKILL.md
Show me how to use Ahrefs and Similarweb together through Glasser. Combine organic-keyword reports with monthly visit trends without merging their metric definitions. Inspect each endpoint and its price before asking me to approve a paid run.What can Ahrefs and Similarweb do?
| Capability | Ahrefs | Similarweb |
|---|---|---|
| Search visibility | ||
| Backlink intelligence | Not covered here | |
| Analysis workflows | Site audit & rank trackingDirect product | |
| Traffic & audience | Not covered here |
Limits & data comparison
| Compare by | Ahrefs | Similarweb |
|---|---|---|
| Limits | Organic Keywords: up to 250 returned rows; no offset pagination. | Traffic Trend: one website, 1–12 published months, worldwide only. Direct v4 REST API: 10 requests/second. |
| Fields & data scope | Keyword, best position, URL, search volume, CPC and traffic; select, where and order_by supported. | One month and estimated visit count per row; referrals and audience breakdowns use separate endpoints. |
| Execution & reliability | Synchronous report, 75-second Run timeout. Empty reports are free; invalid field names can reject the request. | Synchronous report, 40-second Run timeout. An unpublished month can return invalid_date_range; choose available dates. |
| Access & trade-offs | Direct API bills rows and requested fields with a 50-unit minimum for billable requests. Glasser offers selected reports. | Traffic is estimated, not first-party analytics. Latest completed month may not be published yet; monthly data normally arrives by the 10th. |
Ahrefs vs Similarweb pricing
Similarweb
Paid API access
Quote required
API package or standalone API
- Starting cost
- No public API minimum; sales quote required
- Scope
- Metrics, markets and history affect the quote
- API access
- Confirm API entitlement in the contract
Task-based cost example
Ahrefs: 1,000 organic-keyword rows + Similarweb: 10 domains × 12 published monthly visits
| Task | Direct: entry spend | Glasser: task charges |
|---|---|---|
| Ahrefs: 1,000 organic-keyword rows | $129.00$129 Lite month; split into requests of at most 100 rows | $15.481,000 × $0.01548 per returned row |
| Similarweb: 10 domains × 12 published monthly visits | Quote requiredAPI access is quoted; no public minimum to calculate a complete direct total | $9.00120 × $0.075 per returned row |
| Entry spend / task charges | $129.00 + Similarweb quote | $24.48 |
Inputs and outputs
Ahrefs
- InputDomain or URL, date and country
- ProcessRead Organic Keywords
- OutputRanking keyword rows with URLs and traffic
Similarweb
- InputDomain and YYYY-MM range
- ProcessRead monthly Traffic Trend
- OutputWorldwide estimated visits by month
Still unsure? Choose based on your task
Explain organic search performance
Ahrefs links keywords, positions and backlinks to a site’s search visibility.
Benchmark a competitor’s total audience
Similarweb estimates visits and channel-level audience behavior beyond organic search.
Connect search opportunity with market reach
Combine organic-keyword reports with monthly visit trends without merging their metric definitions.
Why use Ahrefs and Similarweb through Glasser?
One API key
Connect the available data APIs with one Glasser credential.
One balance
Share one balance across the Glasser endpoints your task uses.
Pay as you go
Pay for API usage without a separate provider subscription.
Agent-ready
Connect through Skill, MCP or CLI.
Questions before you choose
When should I choose Ahrefs over Similarweb?
Ahrefs links keywords, positions and backlinks to a site’s search visibility. Similarweb estimates visits and channel-level audience behavior beyond organic search.
Why do Ahrefs traffic and Similarweb visits differ?
Ahrefs organic traffic estimates concern search visibility. Similarweb total visits cover a broader traffic scope. Match country, device and period before interpreting trends; neither metric is a substitute for a site’s first-party analytics.
Can I use Ahrefs and Similarweb together through Glasser?
Yes. The selected endpoints for both providers are available through one Glasser key and balance. Match each operation to the right input and field requirements; access covers listed APIs, not the providers’ entire software suites.
Can my agent choose the right data API automatically?
An agent can discover available endpoints and select one using your required fields, input identifiers and budget. It should inspect the contract and ask before paid execution. Glasser does not silently route to an unavailable provider or guarantee identical records across sources.
How do I control API spending through Glasser?
Set a task budget in your agent instructions, inspect the endpoint’s price and cap, and limit request volume. Check each run’s actual charge before continuing. An instruction is not a billing-system hard cap; returned rows and optional parameters can change the total.
Can I use Glasser with Claude Code, Codex and ChatGPT?
Use the Glasser Skill or CLI in a compatible coding agent, or connect Glasser through MCP in a supported client. Client support and account settings determine which integration is available. The prompt above helps your agent discover the APIs relevant to this task.