LLM API Pricing Calculator
Updated Free mock REST & WebSocket APIs
Enter your tokens per request and traffic to compare what every major LLM API would cost — per request, per day and per month — with prompt caching and Batch API discounts applied. The cheapest model that fits your workload is highlighted.
| Cached /1M | |||||
|---|---|---|---|---|---|
GPT-5 nanocheapest OpenAI In $0.05 · Out $0.40 /1M · 400K | $0.05 | $0.005 | $0.40 | 400K | $9.00 |
gpt-oss-20b OpenAI · Groq In $0.075 · Out $0.30 /1M · 128K Open-weight model; price shown is Groq's. | $0.075 | — | $0.30 | 128K | $9.00 |
Ministral 3 8B Mistral In $0.15 · Out $0.15 /1M · 256K | $0.15 | — | $0.15 | 256K | $11.25 1.3× cheapest |
Gemini 2.5 Flash-Lite Google In $0.10 · Out $0.40 /1M · 1M Gemini 2.5 models are limited to existing users. | $0.10 | $0.01 | $0.40 | 1M | $12.00 1.3× cheapest |
Claude Haiku 5.5 Anthropic In $0.10 · Out $0.50 /1M · 1M Prompts over 100,000 tokens are billed at $0.50 / $2.50 per 1M for the whole request. | $0.10 | $0.01 | $0.50 | 1M | $13.50 1.5× cheapest |
GPT-6 Luna OpenAI In $0.10 · Out $0.50 /1M · 1.05M | $0.10 | $0.01 | $0.50 | 1.05M | $13.50 1.5× cheapest |
GPT-4o mini OpenAI In $0.15 · Out $0.60 /1M · 128K | $0.15 | $0.075 | $0.60 | 128K | $18.00 2.0× cheapest |
gpt-oss-120b OpenAI · Groq In $0.15 · Out $0.60 /1M · 128K Open-weight model; price shown is Groq's. | $0.15 | — | $0.60 | 128K | $18.00 2.0× cheapest |
Mistral Small 4 Mistral In $0.15 · Out $0.60 /1M · 256K | $0.15 | — | $0.60 | 256K | $18.00 2.0× cheapest |
GPT-5.6 Luna OpenAI In $0.20 · Out $1.20 /1M · 1.05M | $0.20 | $0.02 | $1.20 | 1.05M | $30.00 3.3× cheapest |
GPT-5.4 nano OpenAI In $0.20 · Out $1.25 /1M · 400K | $0.20 | $0.02 | $1.25 | 400K | $30.75 3.4× cheapest |
Codestral Mistral In $0.30 · Out $0.90 /1M · 128K | $0.30 | — | $0.90 | 128K | $31.50 3.5× cheapest |
DeepSeek Flash DeepSeek In $0.30 · Out $1.20 /1M · 1M Peak-hour price. Off-peak is 50% off: $0.15 / $0.60. | $0.30 | $0.006 | $1.20 | 1M | $36.00 4.0× cheapest |
Gemini 3.1 Flash-Lite Google In $0.25 · Out $1.50 /1M · 1M | $0.25 | $0.025 | $1.50 | 1M | $37.50 4.2× cheapest |
GPT-5 mini OpenAI In $0.25 · Out $2 /1M · 400K | $0.25 | $0.025 | $2 | 400K | $45.00 5.0× cheapest |
GPT-4.1 mini OpenAI In $0.40 · Out $1.60 /1M · 1.05M | $0.40 | $0.10 | $1.60 | 1.05M | $48.00 5.3× cheapest |
Gemini 2.5 Flash Google In $0.30 · Out $2.50 /1M · 1M Gemini 2.5 models are limited to existing users. | $0.30 | $0.03 | $2.50 | 1M | $55.50 6.2× cheapest |
Gemini 3.5 Flash-Lite Google In $0.30 · Out $2.50 /1M · 1M | $0.30 | $0.03 | $2.50 | 1M | $55.50 6.2× cheapest |
Mistral Large 4 Mistral In $0.68 · Out $2.09 /1M · 1M Sale price; list price is $1.36 / $4.18 per 1M. | $0.68 | $0.07 | $2.09 | 1M | $72.15 8.0× cheapest |
Llama 3.3 70B Meta (Llama) · Together AI In $1.04 · Out $1.04 /1M · 128K | $1.04 | — | $1.04 | 128K | $78.00 8.7× cheapest |
Grok Build 0.1 xAI In $1 · Out $2 /1M · 256K | $1 | $0.20 | $2 | 256K | $90.00 10× cheapest |
Gemini 3.8 Flash Google In $0.75 · Out $3.75 /1M · 1M Price rises to $1.50 / $7.50 per 1M on Jan 1, 2027. Explicit cache storage is billed per hour. | $0.75 | $0.075 | $3.75 | 1M | $101.25 11× cheapest |
GPT-5.4 mini OpenAI In $0.75 · Out $4.50 /1M · 400K | $0.75 | $0.075 | $4.50 | 400K | $112.50 13× cheapest |
Grok 4.3 xAI In $1.25 · Out $2.50 /1M · 1M | $1.25 | $0.20 | $2.50 | 1M | $112.50 13× cheapest |
o4-mini OpenAI In $1.10 · Out $4.40 /1M · 200K | $1.10 | $0.275 | $4.40 | 200K | $132.00 15× cheapest |
Claude Haiku 4.5 Anthropic In $1 · Out $5 /1M · 200K | $1 | $0.10 | $5 | 200K | $135.00 15× cheapest |
DeepSeek V4 Pro DeepSeek In $1.32 · Out $3.96 /1M · 1M Peak-hour price. Off-peak (most hours and weekends) is 50% off: $0.66 / $1.98. | $1.32 | $0.044 | $3.96 | 1M | $138.60 15× cheapest |
Mistral Medium 3.5 Mistral In $1.50 · Out $7.50 /1M · 256K | $1.50 | — | $7.50 | 256K | $202.50 23× cheapest |
Grok 4.7 xAI In $2 · Out $6 /1M · 500K | $2 | $0.50 | $6 | 500K | $210.00 23× cheapest |
Gemini 2.5 Pro Google In $1.25 · Out $10 /1M · 1M Gemini 2.5 models are limited to existing users. | $1.25 | $0.125 | $10 | 1M | $225.00 25× cheapest |
GPT-5 OpenAI In $1.25 · Out $10 /1M · 400K | $1.25 | $0.125 | $10 | 400K | $225.00 25× cheapest |
GPT-4.1 OpenAI In $2 · Out $8 /1M · 1.05M | $2 | $0.50 | $8 | 1.05M | $240.00 27× cheapest |
o3 OpenAI In $2 · Out $8 /1M · 200K | $2 | $0.50 | $8 | 200K | $240.00 27× cheapest |
Claude Sonnet 5 Anthropic In $2 · Out $10 /1M · 1M | $2 | $0.20 | $10 | 1M | $270.00 30× cheapest |
Claude Sonnet 5.5 Anthropic In $2 · Out $10 /1M · 1M | $2 | $0.10 | $10 | 1M | $270.00 30× cheapest |
Gemini 4 Argon Google In $2 · Out $10 /1M · 1M Price rises to $4 / $20 per 1M on Dec 1, 2026. Caching is implicit only. | $2 | $0.10 | $10 | 1M | $270.00 30× cheapest |
GPT-6 Sol OpenAI In $2 · Out $10 /1M · 1.05M | $2 | $0.20 | $10 | 1.05M | $270.00 30× cheapest |
GPT-6.1 Sol OpenAI In $2 · Out $10 /1M · 1.05M | $2 | $0.10 | $10 | 1.05M | $270.00 30× cheapest |
Gemini 3.1 Pro (preview) Google In $2 · Out $12 /1M · 1M | $2 | $0.20 | $12 | 1M | $300.00 33× cheapest |
GPT-4o OpenAI In $2.50 · Out $10 /1M · 128K | $2.50 | $1.25 | $10 | 128K | $300.00 33× cheapest |
GPT-5.6 Terra OpenAI In $2 · Out $12 /1M · 1.05M | $2 | $0.20 | $12 | 1.05M | $300.00 33× cheapest |
GPT-5.4 OpenAI In $2.50 · Out $15 /1M · 1.05M | $2.50 | $0.25 | $15 | 1.05M | $375.00 42× cheapest |
Claude Sonnet 4.6 Anthropic In $3 · Out $15 /1M · 1M | $3 | $0.30 | $15 | 1M | $405.00 45× cheapest |
Claude Opus 5.5 Anthropic In $4 · Out $20 /1M · 1M | $4 | $0.20 | $20 | 1M | $540.00 60× cheapest |
GPT-5.6 Sol OpenAI In $4 · Out $20 /1M · 1.05M Promotional pricing through at least Nov 21, 2026. | $4 | $0.40 | $20 | 1.05M | $540.00 60× cheapest |
Claude Opus 4.8 Anthropic In $5 · Out $25 /1M · 1M | $5 | $0.50 | $25 | 1M | $675.00 75× cheapest |
Claude Opus 5 Anthropic In $5 · Out $25 /1M · 1M | $5 | $0.50 | $25 | 1M | $675.00 75× cheapest |
GPT-5.5 OpenAI In $5 · Out $30 /1M · 1.05M | $5 | $0.50 | $30 | 1.05M | $750.00 83× cheapest |
Claude Fable 5.1 Anthropic In $10 · Out $50 /1M · 1M Anthropic's most capable widely released model. | $10 | $0.25 | $50 | 1M | $1,350 150× cheapest |
GPT-6 Astra OpenAI In $10 · Out $50 /1M · 1.05M OpenAI's most capable model. | $10 | $1 | $50 | 1.05M | $1,350 150× cheapest |
Prices checked on 2026-10-18 from each provider's official pricing page (standard tier, USD per 1M tokens). Prices change often — verify before you budget.
Sources: OpenAI · Anthropic · Google · Mistral · Meta (Llama) · DeepSeek · xAI. Excludes taxes, tool/search fees, image/audio tokens and cache-write or storage surcharges.
🔒 Everything is calculated in your browser — prompts you paste are never sent anywhere.
How to estimate LLM API costs
- Enter input and output tokens per request (12k works as shorthand), or switch to “Paste a prompt” to count them for you.
- Set requests per day, the share of input served from the prompt cache, and the share of traffic you can send through the Batch API.
- Sort the table by cost, price or context window, filter providers, and copy the comparison as CSV.
The formula
cost per request = (uncached input × input price
+ cached input × cached price
+ output × output price) / 1,000,000
monthly cost = cost per request × requests per day × 30
batch traffic → × 0.5 at OpenAI, Anthropic, Google, MistralWorked examples
A support chatbot sending 2,000 input and 500 output tokens, 1,000 times a day:
- GPT-5 mini: $45.00 / month ($0.0015 per request)
- Claude Haiku 5.5: $13.50 / month
- Gemini 3.8 Flash: $101.25 / month
- Claude Sonnet 5.5: $270.00 / month
- GPT-6 Astra: $1,350 / month
A RAG app sending 20,000 input tokens (80% a cached document prefix) and 400 output tokens, 5,000 times a day: GPT-6 Sol costs $2,280 / month and Claude Opus 5.5 $4,080 / month — versus $6,600 and $13,200 without caching.
What moves the bill most
- Output tokens. They cost 3–8× input. Ask for concise answers and set
max_tokens. Reasoning (“thinking”) tokens are billed as output. - Prompt caching. Put the stable part (system prompt, tools, documents) first. Cached reads cost 2.5–50% of the input price depending on the model.
- Batch API. Anything that can wait up to 24 hours — evals, backfills, classification — is half price at OpenAI, Anthropic, Google and Mistral.
- Long-context tiers. Some models re-price the whole request above a threshold: OpenAI GPT-5.4+ above 272K input tokens, Gemini Pro above 200K, Claude Haiku 5.5 above 100K, Grok at 200K.
- Different tokenizers. The same text is ~1.5× more tokens on current Claude models than on GPT, so compare cost, not price per token. Use “Paste a prompt” to price each model with its own tokenizer.
All model prices
| Model | Input | Cached input | Output | Context |
|---|---|---|---|---|
| Claude Fable 5.1 Anthropic claude-fable-5-1 | $10 | $0.25 | $50 | 1M |
| Claude Opus 5.5 Anthropic claude-opus-5-5 | $4 | $0.20 | $20 | 1M |
| Claude Opus 5 Anthropic claude-opus-5 | $5 | $0.50 | $25 | 1M |
| Claude Opus 4.8 Anthropic claude-opus-4-8 | $5 | $0.50 | $25 | 1M |
| Claude Sonnet 5.5 Anthropic claude-sonnet-5-5 | $2 | $0.10 | $10 | 1M |
| Claude Sonnet 5 Anthropic claude-sonnet-5 | $2 | $0.20 | $10 | 1M |
| Claude Sonnet 4.6 Anthropic claude-sonnet-4-6 | $3 | $0.30 | $15 | 1M |
| Claude Haiku 5.5 Anthropic claude-haiku-5-5 | $0.10 | $0.01 | $0.50 | 1M |
| Claude Haiku 4.5 Anthropic claude-haiku-4-5 | $1 | $0.10 | $5 | 200K |
| GPT-6 Astra OpenAI gpt-6-astra | $10 | $1 | $50 | 1.05M |
| GPT-6.1 Sol OpenAI gpt-6.1-sol | $2 | $0.10 | $10 | 1.05M |
| GPT-6 Sol OpenAI gpt-6-sol | $2 | $0.20 | $10 | 1.05M |
| GPT-6 Luna OpenAI gpt-6-luna | $0.10 | $0.01 | $0.50 | 1.05M |
| GPT-5.6 Sol OpenAI gpt-5.6-sol | $4 | $0.40 | $20 | 1.05M |
| GPT-5.6 Terra OpenAI gpt-5.6-terra | $2 | $0.20 | $12 | 1.05M |
| GPT-5.6 Luna OpenAI gpt-5.6-luna | $0.20 | $0.02 | $1.20 | 1.05M |
| GPT-5.5 OpenAI gpt-5.5 | $5 | $0.50 | $30 | 1.05M |
| GPT-5.4 OpenAI gpt-5.4 | $2.50 | $0.25 | $15 | 1.05M |
| GPT-5.4 mini OpenAI gpt-5.4-mini | $0.75 | $0.075 | $4.50 | 400K |
| GPT-5.4 nano OpenAI gpt-5.4-nano | $0.20 | $0.02 | $1.25 | 400K |
| GPT-5 OpenAI gpt-5 | $1.25 | $0.125 | $10 | 400K |
| GPT-5 mini OpenAI gpt-5-mini | $0.25 | $0.025 | $2 | 400K |
| GPT-5 nano OpenAI gpt-5-nano | $0.05 | $0.005 | $0.40 | 400K |
| GPT-4.1 OpenAI gpt-4.1 | $2 | $0.50 | $8 | 1.05M |
| GPT-4.1 mini OpenAI gpt-4.1-mini | $0.40 | $0.10 | $1.60 | 1.05M |
| GPT-4o OpenAI gpt-4o | $2.50 | $1.25 | $10 | 128K |
| GPT-4o mini OpenAI gpt-4o-mini | $0.15 | $0.075 | $0.60 | 128K |
| o3 OpenAI o3 | $2 | $0.50 | $8 | 200K |
| o4-mini OpenAI o4-mini | $1.10 | $0.275 | $4.40 | 200K |
| gpt-oss-120b OpenAI · Groq gpt-oss-120b | $0.15 | — | $0.60 | 128K |
| gpt-oss-20b OpenAI · Groq gpt-oss-20b | $0.075 | — | $0.30 | 128K |
Gemini 4 Argongemini-4-argon | $2 | $0.10 | $10 | 1M |
Gemini 3.8 Flashgemini-3.8-flash | $0.75 | $0.075 | $3.75 | 1M |
Gemini 3.5 Flash-Litegemini-3.5-flash-lite | $0.30 | $0.03 | $2.50 | 1M |
Gemini 3.1 Pro (preview)gemini-3.1-pro-preview | $2 | $0.20 | $12 | 1M |
Gemini 3.1 Flash-Litegemini-3.1-flash-lite | $0.25 | $0.025 | $1.50 | 1M |
Gemini 2.5 Progemini-2.5-pro | $1.25 | $0.125 | $10 | 1M |
Gemini 2.5 Flashgemini-2.5-flash | $0.30 | $0.03 | $2.50 | 1M |
Gemini 2.5 Flash-Litegemini-2.5-flash-lite | $0.10 | $0.01 | $0.40 | 1M |
| Mistral Large 4 Mistral mistral-large-4 | $0.68 | $0.07 | $2.09 | 1M |
| Mistral Medium 3.5 Mistral mistral-medium-3-5 | $1.50 | — | $7.50 | 256K |
| Mistral Small 4 Mistral mistral-small-2603 | $0.15 | — | $0.60 | 256K |
| Codestral Mistral codestral-2508 | $0.30 | — | $0.90 | 128K |
| Ministral 3 8B Mistral ministral-8b-2512 | $0.15 | — | $0.15 | 256K |
| Llama 3.3 70B Meta (Llama) · Together AI llama-3.3-70b | $1.04 | — | $1.04 | 128K |
| DeepSeek V4 Pro DeepSeek deepseek-v4-pro | $1.32 | $0.044 | $3.96 | 1M |
| DeepSeek Flash DeepSeek deepseek-flash | $0.30 | $0.006 | $1.20 | 1M |
| Grok 4.7 xAI grok-4.7 | $2 | $0.50 | $6 | 500K |
| Grok 4.3 xAI grok-4.3 | $1.25 | $0.20 | $2.50 | 1M |
| Grok Build 0.1 xAI grok-build-0.1 | $1 | $0.20 | $2 | 256K |
USD per 1M tokens, standard tier, checked 2026-10-18. Source: each provider's official pricing page.
Prices were checked on 2026-10-18 from each provider's official pricing page. They change often, so confirm on the provider's site before committing to a budget.
Related tools
Frequently asked questions
Which LLM API is cheapest?
For simple, high-volume tasks the small models — GPT-5 nano, GPT-6 Luna, Claude Haiku 5.5, Gemini 2.5 Flash-Lite and DeepSeek Flash — cost cents per thousand requests. The cheapest for you depends on your input/output mix and context length, which is why the calculator ranks models for your exact workload.
Are these prices up to date?
Prices were checked on 2026-10-18 from each provider's official pricing page. They change often, so confirm on the provider's site before committing to a budget.
Does the calculator include cache-write costs?
No. Anthropic charges 1.25× input to write a 5-minute cache entry (2× for 1 hour) and some OpenAI models 1.25×; Gemini bills explicit-cache storage per hour. With a high hit rate these are small, but add them for exact budgets.
How do I estimate tokens per request?
Paste a real prompt in “Paste a prompt” mode, or use the token counter. A typical chat turn with a system prompt and some history is 1,000–4,000 input tokens; RAG requests with retrieved documents are often 10,000–50,000.
Why is Claude's count higher than GPT's for the same prompt?
Claude's newer tokenizer splits English into about 1.5× as many tokens as OpenAI's o200k. In prompt mode each model is priced with its own tokenizer; in token mode you enter one number for all models.
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