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GPT-4o

GPT-4o is an AI model made by OpenAI. OpenAI released it on 13 May 2024. It takes text, image and returns text. Its context window is 128,000 tokens.

OpenAI

GPT-4o is an AI model made by OpenAI. OpenAI released it on 13 May 2024. It takes text, image and returns text. Its context window is 128,000 tokens. Its longest answer is 16,384 tokens. Through the API it costs $2.50 per 1M tokens for input and $10.00 per 1M tokens for output. Its knowledge cutoff is 1 October 2023.

Released
13 May 2024 — openai.com, read 16 October 2026
Status
Not confirmed: two readings disagree: deprecated and ga
Takes
Text, Image — developers.openai.com, read 16 October 2026
Returns
Text — developers.openai.com, read 16 October 2026
Open weights
Not confirmed: The cited maker pages do not state whether GPT-4o's weights are downloadable or open.
Licence
Not confirmed: The cited maker pages do not name a licence for GPT-4o.
Context window
128,000 tokens — developers.openai.com, read 16 October 2026
Longest answer
16,384 tokens — developers.openai.com, read 16 October 2026
Knowledge cutoff
1 October 2023 — developers.openai.com, read 16 October 2026
API price, input
$2.50 per 1M tokens — developers.openai.com, read 19 October 2026
API price, output
$10.00 per 1M tokens — developers.openai.com, read 19 October 2026
Where
Not confirmed: two readings disagree: api and api, app
Parameters
Not confirmed: The cited maker pages do not publish GPT-4o's parameter count.
Model card
Not confirmed: two readings disagree: https://developers.openai.com/api/docs/models/gpt-4o and https://openai.com/index/gpt-4o-system-card/

Benchmarks

Measured by others, not by the maker: each score with the name the measurer gives the model and the setting it ran, its day and its licence.

Arena

Arena’s leaderboard dataset (lmarena-ai/leaderboard-dataset on Hugging Face), CC BY 4.0: ratings from people’s votes between two anonymous models, as Arena publishes them. Data · CC BY 4.0

Epoch AI

Epoch AI, ‘Capabilities & benchmarking’, epoch.ai/benchmarks, CC BY 4.0: Epoch AI’s own runs and its Capabilities Index. Data · CC BY 4.0

Questions

When was GPT-4o released?

OpenAI released GPT-4o on 13 May 2024.

What is the context window of GPT-4o?

The context window of GPT-4o is 128,000 tokens, as OpenAI prints it.

How much does the GPT-4o API cost?

On the standard tier, GPT-4o costs $2.50 per 1M tokens for input and $10.00 per 1M tokens for output, as OpenAI lists it.

What does GPT-4o take and return?

GPT-4o takes text, image and returns text.

What is the knowledge cutoff of GPT-4o?

The knowledge cutoff of GPT-4o is 1 October 2023.

More from OpenAI

Sources

  1. GPT-4o Model | OpenAI API (read 16 October 2026)
  2. Hello GPT-4o (read 16 October 2026)
  3. Deprecations | OpenAI API (read 16 October 2026)
  4. GPT-4o Model | OpenAI API (read 19 October 2026)
  5. GPT-4o Model | OpenAI API (read 19 October 2026)

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