How much does GPT-4o (2024-11-20) cost per month?

For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, GPT-4o (2024-11-20) costs about $2,250 per month at OpenAI's list prices ($2.50 per 1M input tokens, $10.00 per 1M output tokens).

Does GPT-4o (2024-11-20) support prompt caching?

Yes. Cached input costs $1.25 per 1M tokens, compared with $2.50 for regular input.

How long is GPT-4o (2024-11-20)'s context window?

GPT-4o (2024-11-20) accepts up to 128,000 tokens (128K) of context and returns up to 16,384 tokens per response.

GPT-4o (2024-11-20) API Pricing

OpenAI · released Nov 20, 2024 · 128K context · API model ID gpt-4o-2024-11-20

GPT-4o (2024-11-20) by OpenAI API pricing: $2.50 per 1M input tokens and $10.00 per 1M output tokens (provider list price via models.dev, Oct 10, 2026).

Prices

GPT-4o (2024-11-20) prices, USD per 1M tokens
Price	USD per 1M tokens
Input	$2.50
Output	$10.00
Cache read	$1.25
Cache write	Not published

OpenAI's list price for its own API, as compiled by models.dev and checked Oct 10, 2026, 09:00 UTC. Prices on cloud platforms and resellers can differ. Provider documentation

Estimated monthly cost

$2,250

per month

per day: $75.00
per request: $0.0075

Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.

Compare this workload across models

Monthly cost by workload

Workload	Per month
Chatbot1,000 in / 500 out tokens, 10,000 requests a day	$2,250/mo
RAG8,000 in / 500 out tokens, 5,000 requests a day	$3,750/mo
Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input	$2,850/mo

Context and capabilities

Context: 128,000 tokens
Max output: 16,384 tokens
Input: text, image
Output: text
Knowledge cutoff: September 2023
Open weights: No
Tool calling: Yes
Reasoning: No
Structured outputs: Yes

Capabilities and limits as listed by models.dev.

Similarly priced models

Gemini 3.1 Pro Preview · $2.00 in / $12.00 out
Claude Sonnet 5.5 · $2.00 in / $10.00 out
GPT-6.1 Sol · $2.00 in / $10.00 out
Kimi K3 · $3.00 in / $15.00 out

Price history

No price changes since we started tracking on Oct 8, 2026.

Questions

How much does GPT-4o (2024-11-20) cost per month?: For a chatbot handling 10,000 requests a day with 1,000 input and 500 output tokens each, GPT-4o (2024-11-20) costs about $2,250 per month at OpenAI's list prices ($2.50 per 1M input tokens, $10.00 per 1M output tokens).
Does GPT-4o (2024-11-20) support prompt caching?: Yes. Cached input costs $1.25 per 1M tokens, compared with $2.50 for regular input.
How long is GPT-4o (2024-11-20)'s context window?: GPT-4o (2024-11-20) accepts up to 128,000 tokens (128K) of context and returns up to 16,384 tokens per response.