Privacy-focused AI chatbot that generates uncensored text, code, images, and translations without storing conversations or requiring an account.
20M visits/mo+18.6%#13 Coding & Development
PromptSpend
LLM API cost calculator for comparing prices across 80 models from 12 providers
FreeStarting price
899Monthly visits
About PromptSpend
PromptSpend provides a side-by-side cost comparison for large language model APIs from major providers including OpenAI, Anthropic, Google, Mistral, and others. Users can paste real prompts or adjust sliders to estimate token-based pricing for input, output, and system messages across up to four models simultaneously. The tool tracks 80 models across 12 providers, with prices verified daily from vendor sources or public feeds. Pricing data includes input and output costs, promotional rates, and legacy pricing where applicable. The platform operates without accounts, trackers, or cookies, and all pasted content remains client-side. Beyond the web interface, PromptSpend offers mobile apps for iOS and Android, a VS Code extension, an MCP server for AI coding tools, and a keyless pricing API for programmatic access. Prices are updated every morning via automated GitHub Actions, with discrepancies flagged for review.
Key features
- Side-by-side cost comparison for up to four models
- Real-time token counting for pasted prompts
- Daily price verification from vendor sources
- Mobile apps for iOS and Android
- VS Code extension and MCP server integration
- Keyless pricing API with JSON/CSV output
- Promotional and legacy pricing tracking
- Flagged price discrepancies for review
Use cases
- Estimating API costs before deploying LLM applications
- Comparing model pricing for budget planning
- Integrating real-time pricing into AI development workflows
Pros
- Tracks 80 models across 12 providers
- Prices verified daily from vendor sources
- No account, tracker, or cookie required
- Mobile apps and VS Code extension available
- Keyless pricing API for programmatic access
Cons
- Limited to LLM API cost comparison
- No free tier for API access
- Pricing assumptions may not match all use cases
Frequently asked questions about PromptSpend
What is PromptSpend and what does it do?
PromptSpend is an interactive calculator that provides side-by-side cost comparisons for large language model APIs from major providers like OpenAI, Anthropic, Google, Mistral, and others. It allows users to estimate token-based pricing for input, output, and system messages across multiple models simultaneously.
Who should use PromptSpend?
PromptSpend is designed for developers, researchers, and businesses who need to compare LLM API costs before making API calls. It is particularly useful for those managing multiple models or optimizing AI-related expenses.
Does PromptSpend require an account or track user data?
No, PromptSpend operates without requiring accounts, trackers, or cookies. All pasted content remains client-side, ensuring user privacy and data security.
How often is the pricing data updated?
Pricing data is updated every morning via automated GitHub Actions. Discrepancies in pricing are flagged for review to maintain accuracy.
What integrations or tools are available with PromptSpend?
PromptSpend offers mobile apps for iOS and Android, a VS Code extension, an MCP server for AI coding tools, and a keyless pricing API for programmatic access to its pricing data.
How can I get started with PromptSpend?
To get started, visit the PromptSpend website, enable JavaScript, and use the interactive calculator to paste prompts or adjust sliders for estimating costs. No account creation is necessary.
PromptSpend traffic & engagement
promptspend.com · third-party estimates from Similarweb
Data as of Sep 2026Full AI website ranking →
Monthly visits · Sep 20260+236.7% MoM
Rank among AI websites#7,416▲ 390 vs last monthof 8,384 tools on Aitoolnavio
Top marketIndonesia100%
Pages per visit0Average pages viewed
Bounce rate0%Lower than 84% of AI sites
Traffic trend
Last 2 months · grows by one month every month
- Aug 2026267
- Sep 2026899+236.7%
Where visitors come from
Share of visits by channel
No measurable traffic from Social, Paid Referrals or Search.
Top countries
Share of visits · estimated visits
Compared with similar tools
Coding & Development · Sep 2026
Traffic figures are third-party estimates, good for scale and trends; they can differ from a company's own numbers. Updated monthly.
