AI & Prompt Tools · Free tool
Gemini vs ChatGPT Cost Calculator
Compare per-token pricing across Gemini 3 Pro, 2.5 Pro/Flash, GPT-5/mini/nano, and GPT-4o. See which model wins at your input/output mix.
Updated June 2026
Cheapest at this volume
GPT-5 nano — $10.5/mo
| Model | $ in / 1M | $ out / 1M | Monthly cost |
|---|---|---|---|
| GPT-5 nano | $0.05 | $0.40 | $10.5 |
| Gemini 2.5 Flash-Lite | $0.10 | $0.40 | $13 |
| GPT-4o mini | $0.15 | $0.60 | $19.5 |
| GPT-5 mini | $0.25 | $2.00 | $52.5 |
| Gemini 2.5 Flash | $0.30 | $2.50 | $65 |
| Gemini 2.5 Pro | $1.25 | $5.00 | $162.5 |
| Gemini 3 Pro | $2.50 | $10.00 | $325 |
| GPT-5 | $2.50 | $10.00 | $325 |
| GPT-4o | $2.50 | $10.00 | $325 |
Heads up: rates are USD per 1M tokens at standard tier; they shift quarterly. Doesn’t include caching discounts, batch API (50% off), or vision/audio surcharges — use the prompt-cache and batch-API calculators for those.
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What it does
Compare per-token API pricing across all current Gemini and OpenAI models at your real volume. Inputs are tokens-per-call (in thousands) and calls-per-month; outputs are sorted cost-by-model with the cheapest flagged. Useful for picking a model before committing, or for costing out a switch.
For a deeper look at the full frontier-model landscape, see the frontier model tracker.
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Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/gemini-vs-chatgpt-cost-calculator" width="100%" height="720" frameborder="0" loading="lazy" title="Gemini vs ChatGPT Cost Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Enter input + output tokens per call (in thousands).
- Enter calls per month.
- Read the cheapest pick + full table.
See how this compares
- Head-to-headClaude vs GeminiClaude vs Gemini head-to-head: coding, long context (1M vs 2M), multimodal, agents, pricing, and which to pick for your real 2026 workflow.
- Head-to-headChatGPT vs GeminiChatGPT vs Gemini in 2026: coding, multimodal, integrations, voice mode, video generation, pricing, and which one fits your workflow.
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