LLM Toolkit Tools directory
The complete LLM toolkit
5 free tools that run entirely in your browser — measure tokens, check verified per-token rates, and model your real monthly bill. No accounts, no API keys, no data collection.
AI Token Counter
LiveCount tokens for GPT-5, Claude, Gemini and more — with live cost estimates and context window usage. Everything runs locally in your browser.
LLM Pricing Comparison
LiveSide-by-side API pricing for every major model — input, output, cached input and context — each row dated to its last verification.
Context Window Comparison
LiveCompare context window sizes across all major LLMs, visualized. Find the model that actually fits your document.
LLM API Cost Calculator
LiveEstimate your real monthly API spend by request volume, input/output ratio and caching — then compare models on total cost.
Token ↔ Words Converter
LiveConvert between tokens and words instantly: 1,000 tokens ≈ 750 words. Reference table from 100 to 1M tokens with pages and context fit.
How the tools fit together
A typical workflow: paste your prompt or document into the AI Token Counter to get exact token counts and context-window usage, check what each model charges on the Pricing Comparison, then enter your request volume and cache hit rate into the API Cost Calculator to see the monthly bill for every model at once. Long documents? The Context Window Comparison shows which models fit your text, and the Token-Words Converter translates between tokens, words and pages.
Frequently asked questions
Are these LLM tools really free?
Yes. Every tool on this site is a static page that runs 100% in your browser — no sign-up, no API keys, no server calls. Paste an entire novel into the Token Counter and nothing is uploaded; the count happens locally on your device.
Which tool should I start with?
If you are budgeting an API project, start with the Pricing Comparison to see verified rates for 22 models side by side, then feed your request volume and cache profile into the Cost Calculator. If you already have prompts or documents, measure real usage with the Token Counter first — every other number flows from your true token counts.
How current is the pricing data behind the tools?
Every rate shown in the Pricing Comparison and Cost Calculator is verified against official OpenAI, Anthropic and Google pricing pages, and every row carries its verification date. Promotional rates are labeled with their expiry — for example, GPT-5.6 Sol runs $4.00 per 1M input tokens at least through November 21, 2026 before reverting.
Model directory
One profile page per tracked model — verified rates, context windows in words and pages, and monthly cost at three real workloads.
Comparison hub
28 head-to-head matchups with per-token rates, context windows and workload-priced monthly costs for every pair.