LLM prices per 1M tokens

264 models · 161 price changes

GPT-4o

OpenAI · 128K context · released May 13, 2024 · checked 12h ago

GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs.

Ways to buy 2

Way to buyIn / out per 1M
OpenAI API
The lab's own API · cached $1.25
$2.5 / $10List price
Azure AI Foundry
Default region
$2.5 / $10Same as list

USD per 1M tokens; batch $1.25 in, $5 out on the lab's API. Regions are separate routes.

Through a gateway

Your own numbers

100M input and 20M output tokens a month: $450.00 direct.

A dash: not on that gateway's own model list. No published token fee: Martian Gateway, Portkey, TrueFoundry AI Gateway.

Related models

In / out per 1M
GPT-6.1 Terra
OpenAI · 1.05MCheapest: $1 on OpenAI (flex)
$1 / $5GPT-6.1 Terra is the mid-tier model in OpenAI's GPT-6.1 series, priced below GPT-6.1 Sol.
GPT-6.1 Terra Pro
OpenAI · 1.05MCheapest: $1 on OpenAI (flex)
$1 / $5GPT-6.1 Terra Pro is the same underlying model as GPT-6.1 Terra, served with reasoning.mode set to pro for higher-quality responses on complex tasks.
GPT-6.1 Sol
OpenAI · 1.05MCheapest: $2 on OpenAI (flex)
$2 / $10GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series.
GPT-6.1 Sol Pro
OpenAI · 1.05MCheapest: $2 on OpenAI (flex)
$2 / $10GPT-6.1 Sol Pro is the same underlying model as GPT-6.1 Sol, served with reasoning.mode set to pro for higher-quality responses on complex tasks.
Claude Opus 5.5
Anthropic · 1M
$4 / $20Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5.
Gemini 4 Argon
Google · 1MCheapest: $2 on Google Gemini API (flex)
$2 / $10Gemini 4 Argon is Google's flagship reasoning model, built for complex software engineering, deep mathematical and scientific problem solving, and autonomous multi-step agents.
Claude Sonnet 5.5
Anthropic · 1M
$2 / $10Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade.
Muse Spark 1.1
Meta · 1M
$1.25 / $4.25Muse Spark 1.1 is a multimodal reasoning model from Meta, built for agentic tasks.

About GPT-4o

Takes text, image, files in and returns text. First listed Jun 19, 2024. Up to 16K output tokens. Blended price $4.38 per 1M tokens at 3 input to 1 output. Model id gpt-4o.

Price history

$3$1020252026Jun 19, 2024Output $10Input $2.5

List price since Jun 19, 2024, from Internet Archive snapshots of the OpenRouter catalog, then daily reads.

  • New priceApr 10, 20251 year ago
    GPT-4o

    OpenAI raised its API price: cached input Free to $1.25 per 1M tokens.

  • Price cutOct 6, 20242 years ago-50%
    GPT-4o

    OpenAI cut its API price: input $5 to $2.5 and output $15 to $10 per 1M tokens.

Questions

How much does GPT-4o cost?

$2.5 per million input tokens and $10 per million output tokens, with cached input at $1.25, or $1.25 and $5 through the Batch API.

What is the context window of GPT-4o?

128K tokens, with up to 16K tokens of output.

Where is GPT-4o cheapest?

Of 2 routes tracked, Azure AI Foundry is cheapest at $2.5 input and $10 output per million tokens.

Has GPT-4o's price changed?

Yes. The output price went from $15 to $10, first seen Oct 6, 2024.