
OpenAI
Gemini.com
LLM Cost Calculator
Gemini 2.5 Flash
GPT3 Crush
SharpAPI
Estimate LLM API costs before you build — GPT-4, Claude, Gemini

liteLLM
Portkey
Eden AI
APIPark
OpenAI
Helicone AI
boldrouter
A router for LLMs and other AI models

Which is more popular?
Based on our record, OpenRouter seems to be more popular. It has been mentioned 49 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | utilitylab.dev | openrouter.ai |
| Pricing | ||
| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Free browser-based tool to estimate API costs for GPT-4, Claude, Gemini, and open-source models. Calculate prompt, completion, and monthly token expenses before writing code. No sign-up required. AI Cost Simulator helps developers and teams estimate LLM API pricing before they ship. Select from...
No description of OpenRouter yet.
What each product offers, as listed by its team.


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An editorial look at what each product does well and who it suits.


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The AI Tool Most Serious Writers Are Using (OpenRouter Review)
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing UtilityLab.dev and OpenRouter.
UtilityLab.dev's answer
Most LLM cost calculators are either spreadsheets or require signing up for an API. AI Cost Simulator is a free, browser-based tool that works instantly — no account, no installation, no data upload. It supports the widest range of models (GPT-4o, Claude 3.5 Sonnet, Gemini 1.5 Pro, DeepSeek V4 Flash, and more) with both per-call and monthly volume estimates in one view.
UtilityLab.dev's answer
Vanilla JavaScript, HTML, and CSS — no frameworks, no bundlers. All cost calculations happen client-side. The tool is deployed as a static site on Cloudflare Pages for global low-latency access.
UtilityLab.dev's answer
It's the only zero-friction cost estimator. Competitors either lock features behind sign-up walls, only support one model family, or require you to dig through separate pricing pages. AI Cost Simulator gives you a side-by-side comparison of all major LLM providers in one page — and everything runs locally in your browser, so your pricing data never leaves your machine.
UtilityLab.dev's answer
Developers, indie hackers, and technical founders who are evaluating LLM APIs for their next project. Also product managers and engineering leads doing cost analysis before committing to a model provider at scale.
UtilityLab.dev's answer
When building AI-powered features, we realized every model provider publishes pricing differently — per-token, per-character, per-request — and there's no single place to compare them. Instead of bookmarking five pricing pages and building a spreadsheet, we built a dead-simple comparison tool. We open-sourced the approach and made it free so other developers don't have to waste time doing manual math.
UtilityLab.dev's answer
Since it's a free browser tool with no sign-up, we don't track individual users. It's used by developers and teams evaluating LLM costs across startups, agencies, and enterprise engineering teams.
Share your experience with using UtilityLab.dev and OpenRouter. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking UtilityLab.dev since Jul 2026.
If you want a hard daily spend cap and a per-request cost ledger on one machine with no database server to run, RelayPlane is the smallest install of the three (@relayplane/proxy on npm, free, MIT). If you want 100+ providers behind one... - Source: dev.to / 4 days ago
Create a key on openrouter.ai (Keys → Create Key). Models ending in :free need no credit. - Source: dev.to / 5 days ago
You want the widest catalogue and do not mind a margin → OpenRouter. Largest marketplace, though Stripe's acquisition of the company in August 2026 leaves future pricing an open question. - Source: dev.to / 7 days ago
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