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GPT-4o

OpenAI

Multimodal model with strong vision, audio, and text capabilities

Input price$2.50 / 1M tokens
Output price$10.00 / 1M tokens
Context window128k tokens
Last updated2026-04-20

Quick calculator

tokens
tokens
req/day
Per request
$0.007500
Daily
$75.00
Monthly
$2,250.00
per month · 30-day estimate
Yearly
$27,375.00

Tips to reduce cost

  • →Use prompt caching to reuse repeated system prompts
  • →Trim whitespace and reduce verbose instructions
  • →Use a smaller model for classification or routing tasks
  • →Batch async requests to get 50% discount (OpenAI/Anthropic)
  • →Cache identical requests at the application layer

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Compared at your current token settings

About GPT-4o

GPT-4o is a premium large language model from openai, priced at $2.5/1M input tokens and $10/1M output tokens. It is priced above the market average and best suited for multimodal tasks. The 128k context window handles long documents, extended conversations, and large code files comfortably.

For most production workloads, the cost breakdown is dominated by input tokens (system prompts, context, retrieved documents) rather than output. At this price point, GPT-4o is positioned for use cases where quality justifies the premium over cheaper alternatives.

GPT-4o supports prompt caching at $1.25/1M — a 50% discount on repeated input tokens. For applications with a fixed system prompt or repeated document context (RAG, chatbots, agents), enabling caching is the single highest-leverage cost optimization available.

Frequently Asked Questions

How much does GPT-4o cost per 1,000 tokens?
GPT-4o costs $0.0025 per 1,000 input tokens and $0.0100 per 1,000 output tokens.
What is GPT-4o's context window?
GPT-4o supports a context window of 128k tokens, which is suitable for long documents and multi-turn conversations.
How does GPT-4o compare to GPT-4o on price?
GPT-4o is priced above the market average on input tokens. At $2.5/1M input vs $2.50/1M for GPT-4o, the cost difference becomes significant at scale — 10,000 requests/day with 1,000 input tokens each costs $750/month with GPT-4o vs $750/month with GPT-4o.
Does GPT-4o support prompt caching?
Yes. GPT-4o supports prompt caching at $1.25/1M tokens — a 50% discount on repeated input. This is especially effective for RAG pipelines and chatbots with large system prompts that repeat across requests.

Compare GPT-4o with other models

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