Choosing the Right AI Model for Website Change Monitoring in 2026

Every PageCrawl.io plan includes AI credits that work automatically with no setup. For most users, the included credits are all you need. This guide is primarily for users who want to bring their own API key (BYOK) and choose a specific model, covering free options to premium models with cost comparisons based on 2026 pricing.

Using included credits? You don't need to choose a model. PageCrawl automatically uses optimized models on your behalf. Each 4,000-token block costs 1 credit (Basic tier) or 10 credits (Pro tier, Ultimate plan only). See AI-Powered Change Detection for details on how credits work.

Pricing updates frequently. Verify current rates at: OpenAI, Gemini, Anthropic, OpenRouter

Why AI Models Matter

AI models enhance website monitoring by automatically summarizing changes, assigning priority scores, and distinguishing meaningful updates from noise.

PageCrawl.io supports four AI providers:

  • OpenAI - GPT-4.1 family, reliable and fast
  • Google Gemini - Competitive pricing, good performance
  • Anthropic Claude - High accuracy, premium quality
  • OpenRouter - A marketplace that gives you access to 200+ AI models from different providers, all through a single account and API key

Understanding Tokens and Costs

What is a Token?

A token is roughly 4 characters or about 3/4 of a word. AI providers charge based on tokens processed:

  • "Hello world" = ~3 tokens
  • A typical paragraph = ~100 tokens
  • A blog post (1,000 words) = ~1,300 tokens
  • A full webpage = ~2,000-10,000 tokens

How PageCrawl Uses Tokens

PageCrawl's AI costs are dominated by input tokens (the page content sent to AI). Output tokens are minimal because summaries are typically just 1-2 paragraphs (~100-200 tokens).

Typical token usage per check:

  • Simple page (blog post, article): ~1,000-2,000 tokens
  • Medium page (product page, news): ~2,000-5,000 tokens
  • Large page (documentation, e-commerce): ~5,000-10,000 tokens

Example cost calculation (Gemini 2.5 Flash at $0.30/M input):

  • 2,000 token page = $0.0006 per check (~1,667 checks per dollar)
  • 5,000 token page = $0.0015 per check (~667 checks per dollar)

Example cost calculation (Claude Opus 4.5 at $5.00/M input):

  • 2,000 token page = $0.01 per check (100 checks per dollar)
  • 5,000 token page = $0.025 per check (40 checks per dollar)

Since output is just a short summary (~150 tokens), output costs add less than 10% to the total. Additionally, AI only runs when a meaningful change is detected on the page. PageCrawl's advanced change detection infrastructure filters out tiny, insignificant changes before they ever reach AI, so you only spend tokens on changes that actually matter.

Model Pricing Comparison (2026)

Prices per million tokens. Most of your cost will be input tokens, as output (summaries) is minimal.

Budget-Friendly Models

Model Provider Input Output Best For
Gemini 2.5 Flash-Lite Google $0.10/M $0.40/M High volume, budget option
GPT-4o Mini OpenAI $0.15/M $0.60/M Budget OpenAI option
Gemini 2.5 Flash Google $0.30/M $2.50/M Good balance of cost/quality

Premium Models

Model Provider Input Output Best For
Claude Haiku 4.5 Anthropic $1.00/M $5.00/M Quality analysis
Gemini 2.5 Pro Google $1.25/M $5.00/M Google's best
GPT-4.1 OpenAI $2.00/M $8.00/M Complex pages
Claude Sonnet 4.5 Anthropic $3.00/M $15.00/M Premium accuracy
Claude Opus 4.5 Anthropic $5.00/M $25.00/M Maximum capability

Privacy Note: Some providers may use data for training. Review each provider's data usage policy for sensitive content. See Privacy section for details.

PageCrawl.io only calls AI when a page actually changes. If you monitor 1,000 pages and only 150 change, you pay for 150 AI requests, not 1,000.

Best Overall Value: GPT-4o Mini

Pricing: $0.15/$0.60 per million tokens (input/output) Recommended For: Most BYOK users

GPT-4o Mini offers the best balance of cost and performance. It's reliable, fast, and very affordable.

Cheapest Option: Gemini 2.5 Flash-Lite

Pricing: $0.10/$0.40 per million tokens Recommended For: High-volume, cost-sensitive monitoring

Note: Google Gemini's free tier was reduced significantly in 2026 (from 250-1000 requests/day to only 5-20 requests/day). For practical use, billing is recommended.

Best for Critical Documents: GPT-4.1 or Claude Sonnet 4.5

GPT-4.1: $2.00/$8.00 per million tokens Claude Sonnet 4.5: $3.00/$15.00 per million tokens Recommended For: Legal documents, terms of service, compliance monitoring, and other critical content where accuracy matters most

Best Models by Content Type

Content Type Budget Option Recommended Premium
Blogs, News, Docs Gemini Flash-Lite GPT-4o Mini -
E-commerce, Pricing Gemini Flash-Lite GPT-4o Mini Claude Haiku 4.5
Legal, ToS, Compliance Claude Haiku 4.5 Claude Sonnet 4.5 Claude Sonnet 4.5
Competitor Monitoring Gemini Flash-Lite GPT-4o Mini Claude Haiku 4.5
API Docs, Changelogs Gemini Flash-Lite GPT-4o Mini -

Real-World Cost Examples

Costs can vary significantly. These are estimates only. Your actual costs depend on:

  • Page complexity and content length
  • How often pages change
  • Deep Analysis setting (on = full page, off = changes only)
  • Max token settings

Token usage by page type:

  • Simple pages (blogs, docs): ~500 tokens
  • Average pages: ~2,000 tokens
  • Content-heavy pages: ~5,000-10,000 tokens
  • Complex pages (e-commerce, SPAs): 10,000-25,000+ tokens

Recommendation: Start with budget-friendly models like Gemini Flash-Lite and set strict monthly limits to avoid unexpected bills.

Cost per 1,000 AI Requests (by token usage)

Model ~500 tok ~2K tok ~5K tok ~10K tok
Gemini Flash-Lite $0.05 $0.21 $0.53 $1.06
GPT-4o Mini $0.08 $0.32 $0.80 $1.59
Gemini Flash $0.15 $0.62 $1.55 $3.10
Claude Haiku 4.5 $0.50 $2.00 $5.00 $10.00
Gemini Pro $0.63 $2.50 $6.25 $12.50

Example: 500 Pages @ 15% Change Rate = 2,250 requests/month

Model Light (~500) Average (~2K) Heavy (~5K) Very Heavy (~10K)
Gemini Flash-Lite $0.12 $0.47 $1.19 $2.39
GPT-4o Mini $0.18 $0.72 $1.80 $3.58
Gemini Flash $0.34 $1.40 $3.49 $6.98
Claude Haiku 4.5 $1.13 $4.50 $11.25 $22.50

Controlling Token Usage

You can reduce token usage in PageCrawl.io settings:

  • Deep Analysis off: Only send changed text to AI (lower tokens, less context)
  • Deep Analysis on: Send entire page for better understanding (higher tokens)
  • Max tokens limit: Default 15K tokens per request (falls back to diff if exceeded)
  • Monthly request limits: Set max AI requests per month to cap costs

Tip: Check your actual token usage in PageCrawl.io's AI statistics to estimate your costs accurately.

OpenRouter: Access 200+ Models

OpenRouter provides unified access to AI models from multiple providers through a single API key.

Benefits: Unified billing, automatic fallbacks, access to free models (Llama, Mistral, Qwen)

Pricing: 5.5% platform fee on top of base model costs

Best for: Experimenting with multiple models, accessing free community models

Recommended models: openai/gpt-4o-mini, anthropic/claude-haiku-4-5, google/gemini-2.5-flash

How to Set Up BYOK in PageCrawl.io

Step 1: Get Your API Key

Provider Get Key At
OpenAI platform.openai.com > API Keys
Google Gemini ai.google.dev > Get API Key
Anthropic console.anthropic.com > API Keys
OpenRouter openrouter.ai > Settings > API Key

Step 2: Configure in PageCrawl.io

  1. Go to Settings > Integrations > AI
  2. Paste your API key
  3. Select model tier:
    • Save Money: Gemini Flash-Lite ($0.10/M), GPT-4o Mini ($0.15/M)
    • Recommended: GPT-4o Mini, Claude Haiku 4.5
    • Best Quality: GPT-4.1, Claude Sonnet 4.5, Gemini Pro
  4. Test connection and save

Step 3: Optimize with Model Overrides

You can customize AI models at three levels:

  1. Workspace default - applies to all pages
  2. Template override - applies to pages using that template
  3. Page override - applies to individual pages

Example strategy:

  • Workspace default: Gemini Flash-Lite (cheapest at $0.10/M)
  • E-commerce template: GPT-4o Mini (best value at $0.15/M)
  • Legal template: Claude Haiku 4.5 (high accuracy)
  • Critical page: Claude Sonnet 4.5 (premium)

Tips for Optimizing Costs

  1. Start with budget models - Gemini Flash-Lite offers the lowest per-token pricing at $0.10/M input
  2. Use templates - group similar pages with the same model
  3. Check frequency doesn't affect AI costs - AI only runs when changes occur
  4. Monitor usage - most users see only 10-50 AI requests/day

Privacy and Data Security Considerations

Provider Data Usage Best For
OpenAI/Anthropic API data not used for training Confidential content, legal docs
Google Gemini Review Google's data policies General monitoring
OpenRouter Varies by underlying model Check each model's policy

When using included AI credits, content is processed through PageCrawl's managed AI infrastructure. When using BYOK, content is sent directly to your chosen provider.

Data protection policies: OpenAI, Anthropic, Google

Privacy note: Free tier models (including some OpenRouter models) may use your data for training. Use paid tiers for sensitive content.

FAQ

Do I need BYOK to use AI? No. All plans include AI credits that work automatically. BYOK is optional for users who want unlimited usage or specific model control.

What happens when my credits run out? Page monitoring continues normally, but AI summaries pause until credits reset next month. You can also switch to BYOK for unlimited usage.

Can I switch between credits and BYOK? Yes, at any time in Settings > Workspace > AI.

Can I switch models after starting? Yes. Changes apply immediately to new checks. Historical data remains intact.

Do I pay for checks that don't find changes? No. AI only runs when pages actually change.

Can I use different models for different pages? Yes, via workspace defaults, template overrides, and page-level overrides.

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