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Developer tools for AI engineering
Calculators, analyzers, and utilities for building with LLMs. Everything runs in your browser — no signup, and your data never leaves your machine.
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Calculators, analyzers, and utilities for building with LLMs. Everything runs in your browser — no signup, and your data never leaves your machine.
Compare Claude, GPT, Gemini and DeepSeek prices — see your monthly cost at any volume.
Cost & PricingPaste a prompt or set token counts and get the exact cost on every major model.
Cost & PricingModel a full agentic coding session — turns, tool calls and growing context, priced.
Cost & PricingFind the breakeven point where prompt caching starts saving you money, per provider.
Cost & PricingSee how much of your workload qualifies for 50% batch pricing and what you would save.
Cost & PricingForecast your engineering team's monthly AI spend from team size and usage profiles.
Cost & PricingFind tasks where a cheaper model does the job — and how much you save by routing them.
Cost & PricingGPU rental versus API tokens: find your breakeven volume before buying hardware.
Cost & PricingPrice your RAG pipeline: document indexing cost plus monthly query embedding spend.
Cost & PricingCompare fine-tuning costs against long-prompt overhead to find which approach wins.
Cost & PricingAI review versus human hours: the monthly cost of reviewing your team's pull requests.
Cost & PricingA guided diagnostic that finds what blew up your AI bill — loops, cache misses or retries.
Cost & PricingPer-seat plans or pay-per-token? Simulate your team's usage curve and find the winner.
Cost & PricingEstimate the energy and CO2 of your monthly token volume, with honest uncertainty ranges.
Cost & PricingPrice AI image generation per image and per month — gpt-image and Gemini rates, verified.
Cost & PricingSora per-second pricing by resolution — price a clip, a campaign, or a monthly pipeline.
Cost & PricingWhisper and 4o-transcribe pricing per minute — price calls, podcasts and meeting archives.
Cost & PricingGrounded search costs $10-35 per 1k queries — price your agent's search habit accurately.
Cost & PricingSplit traffic across models and see your true blended rate per million tokens.
Cost & PricingPrice a complete task — calls, retries and context included — across models honestly.
96 tools live · across 5 categories — all free, all client-side.