Prompt caching savings calculator
Compare monthly input cost with and without prompt caching, using your cache discount, write premium and hit rate
Result
Monthly savings
$1,594
- Lower input cost
- 66.4%
- Monthly cost without caching
- $2,400
- Monthly cost with caching
- $806
LLM API prices per 1M tokens
Standard prices for current Claude, GPT and Gemini models in US dollars per million tokens. Pick a model above to fill the calculator with its prices.
| Model | Provider | Input | Cached input | Output |
|---|---|---|---|---|
| Claude Fable 5.1 | Anthropic | $10.00 | $0.25 | $50.00 |
| Claude Opus 5.5 | Anthropic | $4.00 | $0.20 | $20.00 |
| Claude Sonnet 5.5 | Anthropic | $2.00 | $0.10 | $10.00 |
| Claude Haiku 5.5 Prompts up to 100K tokens | Anthropic | $0.10 | $0.01 | $0.50 |
| GPT-6 Astra Up to 272K input tokens | OpenAI | $10.00 | $1.00 | $50.00 |
| GPT-6.1 Sol Up to 272K input tokens | OpenAI | $2.00 | $0.10 | $10.00 |
| GPT-6.1 Terra Up to 272K input tokens | OpenAI | $1.00 | $0.05 | $5.00 |
| GPT-6 Luna Up to 272K input tokens | OpenAI | $0.10 | $0.01 | $0.50 |
| Gemini 4 Argon Introductory price until 30 Nov 2026, then $4 / $20 | $2.00 | $0.10 | $10.00 | |
| Gemini 3.1 Pro (preview) Prompts up to 200K tokens | $2.00 | $0.20 | $12.00 | |
| Gemini 3.8 Flash Introductory price until 31 Dec 2026, then $1.50 / $7.50 | $0.75 | $0.075 | $3.75 | |
| Gemini 3.5 Flash-Lite | $0.30 | $0.03 | $2.50 |
Prices checked on November 3, 2026 from the official pricing pages: Anthropic, OpenAI, Google. Batch, priority and regional pricing differ. Always confirm on the provider’s page before you budget.
How it is calculated
The cacheable share of the prompt is billed at the discounted rate on a cache hit and at the write premium on a miss. The rest of the prompt is billed at the normal input price.
Keep in mind
Cache discounts and write premiums differ by provider and change over time. Check your provider’s documentation before relying on the result.
Related service
Agent platform consultancy