LLM API Cost Calculator — GPT-4o, Claude, Gemini 2025

Calculate exact API costs for all major LLMs. Convert to INR. Add your markup and see client pricing. For Indian AI freelancers and developers.

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⚠️ Prices as of April 2025. LLM pricing changes frequently. Always verify at each provider's pricing page before billing clients.

🤖 Calculate Cost for One Model

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Input Tokens per Request ~750 words ≈ 1,000 tokens

Output Tokens per Request

Requests per Day

USD/INR Rate

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Input Tokens per Request

Output Tokens per Request

Requests per Day

USD/INR Rate

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💼 Project Pricing for Freelancers

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Est. Input Tokens per Request

Est. Output Tokens per Request

Est. Total Requests in Project

Your Markup (times cost)

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Developer Hours for Project

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USD/INR Rate

₹

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Frequently Asked Questions

What is a token in LLM pricing?+

A token is roughly 4 characters or 0.75 words in English. "Hello world" = 2 tokens. A 750-word article = roughly 1,000 tokens. LLM pricing is charged per 1,000 tokens (1K tokens) or per million tokens (1M tokens). Input and output tokens are priced separately — output tokens typically cost more.

Is GST applicable on LLM API usage in India?+

Yes. LLM APIs from foreign providers (OpenAI, Anthropic, Google) are covered under the Reverse Charge Mechanism (RCM) for Indian GST-registered businesses. You need to self-assess and pay 18% IGST on these imports of services, file GSTR-3B, and claim input tax credit.

Which LLM is cheapest for bulk use?+

As of April 2025, the cheapest options for high-volume are Google Gemini 1.5 Flash and Anthropic's claude-haiku tier. GPT-4o mini is also very competitive. For high-quality output (creative, complex reasoning), GPT-4o and Claude 3.5 Sonnet offer the best quality-to-cost ratio. Use our comparison tab above.