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2026 pricing · 12 calculators · runs 100% in your browser

Free LLM & API Cost Calculator — Know Your Infra Bill Before It Arrives.

Real-time cost calculators for LLM tokens, vector databases, cloud VPS, serverless, auth providers, AI coding tools and payment fees. 12 free tools, zero signup.

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LLM Token & API Cost Calculator

Estimate monthly spend across GPT-5.5, GPT-5.4 nano, Claude Sonnet 4.6, and Gemini 3.5 Flash based on your token throughput.

Estimated cost
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— per month
Price (input / output per 1M)—
Cost per request—
Input token cost—
Output token cost—
Total tokens / period—

Pricing reflects published 2026 public API rates (USD, pay-as-you-go). Volume discounts, cached input, and batch pricing are not applied. Verify against the provider's pricing page before budgeting.

LLM Cost Calculator — GPT-5.5, GPT-5.4 Nano & Gemini 3.5 Flash Pricing

This LLM cost calculator helps developers and product teams estimate their monthly OpenAI, Anthropic, and Google API spend before it hits their credit card. You enter three variables — input tokens per request, output tokens per request, and monthly request volume — and the tool computes your total cost using current June 2026 USD pricing. GPT-5.5 costs $5.00 per million input tokens and $30 per million output tokens. For budget workloads, GPT-5.4 nano at $0.20/$1.25 per 1M is the most affordable OpenAI option in 2026 — a team running 100,000 requests/month at 1,500 in + 500 out tokens pays around $30/month.

How much does GPT-5.5 API cost per 1,000 requests?

At June 2026 pay-as-you-go pricing, GPT-5.5 costs $5.00/1M input tokens and $30/1M output tokens. A typical request with 1,500 input + 500 output tokens costs about $0.0225. For 1,000 such requests, you'd pay approximately $22.50 USD. Use GPT-5.4 nano ($0.20/$1.25) to reduce that cost by ~97%.

What is the cheapest LLM API for high-volume applications?

For high-volume workloads in 2026, GPT-5.4 nano ($0.20/1M input) and Gemini 3.1 Flash-Lite ($0.25/1M input) are the most cost-effective capable options. Claude Haiku 4.5 ($1.00/$5.00) is competitive when output quality matters more.

How do I reduce my LLM API costs in production?

Key strategies: use prompt caching (saves 75–90% on repeated context), switch to GPT-5.4 nano or Gemini 3.1 Flash-Lite for classification tasks, enable batch processing for async jobs, and compress system prompts.

Full LLM calculator with all models →

All 13 Free Calculators

Click any tool to open the full interactive calculator with all providers and options.

AI & LLM Tools
🧠
LLM Cost Calculator
GPT-4o vs Claude vs Gemini — per token & per month
Open Calculator →
 🐋
DeepSeek API Cost
DeepSeek V3 & R1 — $0.27/1M input
Open Calculator →
 🧲
Embedding API Cost
OpenAI vs Cohere vs Voyage AI
Open Calculator →
 🎨
Image Generation Cost
DALL·E 3 vs Stable Diffusion vs Flux
Open Calculator →
 🎙️
STT / TTS API Cost
Whisper vs ElevenLabs vs Deepgram
Open Calculator →
 🤖
AI Agent Cost
Multi-step pipeline pricing per run
Open Calculator →
 💻
AI Coding Tool Cost
Cursor vs Copilot vs Claude Code
Open Calculator →
 🧊
Vector Database Cost
Pinecone vs Supabase vs Qdrant vs Weaviate
Open Calculator →
Infrastructure
☁️
Cloud VPS Comparison
Hetzner vs DigitalOcean vs Vultr
Open Calculator →
 ⚡
Serverless Cost Calculator
Lambda vs Vercel vs Cloudflare Workers
Open Calculator →
 🔀
API Gateway Pricing
AWS API GW vs Cloudflare vs Kong
Open Calculator →
Payments & Auth
💳
Payment Processor Fees
Stripe vs Paddle vs Lemon Squeezy
Open Calculator →
 🔑
Auth Provider Cost
Clerk vs Supabase Auth vs Auth0
Open Calculator →
 🆚
Supabase vs Firebase
BaaS pricing — flat $25/mo vs per read/write
Compare Now →

From the Blog

Deep dives into API pricing, cost optimization, and developer infrastructure.

Cost Optimization
How to Reduce LLM API Costs by 60%: 7 Proven Strategies
Prompt caching, model routing, batch API, context compression — with real savings examples.
Read Guide →
AI Coding Tools
Cursor True Cost 2026: Why Your $20/mo Plan Bills $180+
Agentic usage pushes Cursor bills far beyond the base plan. The real cost breakdown explained.
Read Guide →
Comparison
GitHub Copilot vs Cursor vs Claude Code — Real Monthly Costs
Light, medium, and heavy usage costs for every major AI coding tool in 2026.
Read Guide →
LLM Pricing
LLM API Cost Guide 2026: GPT-4o, Claude & Gemini Pricing
Complete model pricing comparison per token, per request, and per month. Updated June 2026.
Read Guide →
Build it cheaper — partner offers
V Get $300 free credits at Vultr ↗ ⚡ Build with Supabase ↗ ▲ Ship on Vercel ↗

Frequently asked questions

Everything about how these calculators work and where the numbers come from.

How accurate are the LLM pricing calculations? +

They use published 2026 public API rates from OpenAI, Anthropic, Google and others, reviewed monthly. They don't include negotiated enterprise discounts, prompt caching, or batch-API savings — so treat them as an upper-bound budgeting estimate.

Is APICalculators free to use? +

Yes. Every calculator is free with no registration, login, or paywall. We sustain the site through display ads and affiliate partnerships.

Do you store or send my data anywhere? +

No. All math runs entirely in your browser with JavaScript. Nothing you type is transmitted to a server or persisted beyond your session.

Why do vector DB and image estimates vary from my real bill? +

Those providers price on complex dimensions (read units, pod-hours, GPU time, plan tiers). We use simplified, transparent models for apples-to-apples comparison — great for choosing a provider, not a substitute for their official calculator.

Which payment processor is cheapest? +

It depends on your average transaction value and whether you need tax handling. Stripe usually wins on raw % for high-value transactions; Paddle and Lemon Squeezy bundle global VAT/sales-tax compliance into a higher rate. The calculator shows the real dollar difference for your numbers.

About Our Methodology

How we source, maintain, and calculate every number on this site.

📌 Pricing Sources

All prices are sourced directly from each provider's official public pricing page. We never estimate, interpolate, or use affiliate-biased rates. When a provider quotes pricing in ranges or tiers, we use the standard on-demand, pay-as-you-go rate available to any developer without a sales call.

For LLM APIs: OpenAI, Anthropic, and Google pricing pages. For cloud infrastructure: Hetzner, Vultr, DigitalOcean pricing pages. For payment processors: Stripe, Paddle, Lemon Squeezy official rates. For auth providers: Clerk, Supabase, Auth0, WorkOS pricing pages.

🔄 Update Schedule

We review all pricing data monthly and update within 48 hours of any provider announcement. LLM API pricing changes most frequently — OpenAI, Anthropic, and Google have each made multiple pricing adjustments in 2025–2026 as competition intensified. Infrastructure and SaaS tool pricing changes less frequently (quarterly to annually).

All calculators read from a single /pricing-data.json file so every update propagates to all 12 calculators simultaneously. The "Last updated" chip on each calculator page shows the most recent data refresh date.

🧮 Calculation Models

All math runs in your browser. No data is sent to a server. For simple per-unit pricing (LLM tokens, image generation, embeddings), we apply the published rate directly to your volume inputs. For complex pricing models (vector database storage + query units, serverless compute GB-seconds, auth MAU tiers), we use transparent simplified models documented in each calculator's Pricing Methodology section.

Where providers use complex or opaque pricing (e.g., Pinecone read units, Auth0 enterprise tiers), we clearly label estimates as approximations and link to the provider's official calculator for verification.

⚠️ What We Exclude

We deliberately exclude enterprise negotiated rates, committed-use discounts, academic or startup credits, and promotional rates — because these are not consistently available to all developers. We also exclude free trials. Our goal is to show the sustainable, reproducible cost you can plan a business around, not a promotional introductory price.

Provider-specific bonuses (e.g., Anthropic's prompt caching discount, OpenAI's Batch API 50% discount) are excluded from default calculations but documented in the tips and FAQ sections of each relevant calculator — they require implementation effort to unlock.

How We Keep Prices Accurate

The process behind staying current in a market where pricing changes weekly.

Keeping 12 calculators across 4 languages accurate is a significant editorial commitment. Here is our exact process:

1
Monthly provider reviewOn the first Monday of each month, we visit the pricing page of every provider represented in our calculators. We note any changes and compare against current values in /pricing-data.json. This covers 40+ pricing data points across LLM, vector DB, image generation, payments, auth, and infrastructure providers.
2
Alert monitoring for major providersFor providers that change pricing frequently (OpenAI, Anthropic, Google), we monitor their official announcements via email newsletters and RSS feeds. LLM pricing has changed multiple times in 2025–2026 as competition pushed prices down significantly. We target updating the site within 48 hours of any price change announcement.
3
Community correctionDeveloper communities on Reddit, Hacker News, and X (Twitter) often surface pricing changes faster than official announcements. We monitor these communities and treat community-reported price changes as verification triggers — we verify directly with the provider's pricing page before updating. Found an error? Email hello@apicalculators.com.
4
Single source of truthAll 12 calculators read their pricing from /pricing-data.json — a single JSON file that is the canonical source for all pricing data. When we update one price, all calculators that use that provider automatically reflect the change. Static pricing tables in HTML are updated simultaneously, so there's no drift between the interactive calculator and the comparison tables.
5
Accuracy disclaimerDespite our best efforts, infrastructure pricing is complex and changes rapidly. Never use our calculators as the sole basis for financial decisions, investor projections, or customer contracts. Always verify current rates directly with the provider's official pricing page before committing to a budget. We provide estimates for planning and comparison — treat them as a starting point, not a final number.

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