Token counter
Count prompt tokens, preview OpenAI token IDs, and estimate LLM input cost before sending text to an API.
Open token counterPractical AI stack decisions
Count tokens, estimate API costs, and compare AI tools.
Use source-tracked pricing pages, token counters, and comparison guides to choose AI models and coding tools with less guesswork.
Popular decisions
Start with pricing and cost questions
Open a source-tracked answer or calculator instead of browsing a generic directory.
API pricing
OpenAI API pricing
Review tracked model rates, cached input, and workload cost.
Check OpenAI pricing API pricingAnthropic API pricing
Review tracked Claude rates, caching, and model selection notes.
Check Anthropic pricing Interactive comparisonCompare AI models
Change token volume and requests to compare monthly API cost.
Open model comparison Coding-tool pricingWindsurf pricing
Check plans, team base fees, developer seats, and cost examples.
Check Windsurf pricing Token toolCount prompt tokens
Count tokens before estimating model input cost.
Open token counter Cost methodologyEstimate monthly LLM cost
Work from requests, token volume, output length, and caching.
Read the cost guideDecision data
Built for engineers comparing real options
Each page is structured around pricing, limits, use cases, tradeoffs, alternatives, and source notes that can be verified against official provider pages.
Model directory
Source-tracked model pricing, profiles, context windows, cost examples, and related comparisons.
Browse AI modelsComparison pages
Side-by-side API tradeoffs covering model support, developer experience, pricing posture, and when to choose each option.
Browse comparisonsTracked data
Models and tools in the StackLens index
OpenAI APILLM APIAPI tokensFrom GPT-4o mini: $0.15 input · $0.6 output / 1Mproduction AI features, multimodal apps, developer tooling, broad ecosystem supportAnthropic APILLM APIAPI tokensFrom Claude Haiku 4.5: $1 input · $5 output / 1Mlong document workflows, agentic coding, analysis-heavy tasks, safety-sensitive product teamsCursorAI coding toolSubscriptionFree · Pro $20/mo · Teams $40/user/moindividual developers, small product teams, repo-aware coding help, fast codebase editsOpenAI GPT-4o miniLLM modelAPI tokens$0.15 input · $0.6 output / 1Mlow cost, fast responses, good default for routingOpenAI GPT-4oLLM modelAPI tokens$2.5 input · $10 output / 1Mmultimodal capability, balanced quality, broad ecosystemOpenAI gpt-5.6-solLLM modelAPI tokens$5 input · $30 output / 1Mhigher-capability OpenAI option, standard short and long context prices tracked, fits OpenAI routing plans