GPT-5.4: release date and what it's for
Released , according to OpenAI's announcement. March's flagship, still up and still cheaper than GPT-5.5. OpenAI's own catalogue blurbs haven't caught up with the 5.6 line.
- Status
- Live
- Released
- Lab
- OpenAI
- Input
- $2.50per million tokens
- Output
- $15per million tokens
- Context window
- 1.05Mtokens
- Max output
- 128Ktokens
API model ID: gpt-5.4
What is GPT-5.4 capable of?
3 posts from people showing what they made with GPT-5.4, newest and most-reacted first. People are posting code and science made with it.
Each card is the original post, shown the way X or Reddit embeds it, with a link to where it came from. We picked the ones that show something being made and skipped the benchmark screenshots. We can't vouch for any of them being unedited.
What we've written about GPT-5.4
Codex models and plans explained: GPT-6 Astra, Sol and Luna, and which plan gets which
Pick any GPT-6 model you like on your laptop, but a Codex cloud task on a ChatGPT plan still runs on last generation's Sol.
OpenAI model release dates: o3, GPT-5.5 and GPT-6 Astra, Sol and Luna in order
o3 is from April 2025, and the name Sol now means something different from what it meant in July.
How GPT-5.4 compares on price and context
inputoutput
- GPT-6 Astra$10 / $50
- Claude Fable 5.1$10 / $50
- GPT-5.4$2.50 / $15
- GPT-6 Sol$2 / $10
- Muse Spark 1.3$1.25 / $4.25
- Gemini 3.8 Flash$0.75 / $3.75
- GPT-6 Luna$0.10 / $0.50
how much it reads at once
- GPT-5.41.05M
- GPT-6 Sol1.05M
- GPT-6 Luna1.05M
- GPT-6 Astra1.05M
- Muse Spark 1.31.05M
- Gemini 3.8 Flash1.05M
- Claude Fable 5.11M
Next to the newest OpenAI models and the current model from other labs. Prices are in US dollars per million tokens.
What is GPT-5.4?
GPT-5.4 is a model from OpenAI, built in the US. It's out, and you can use it today.
When did GPT-5.4 come out?
OpenAI released it on March 5, 2026. That date comes from OpenAI's announcement.
More from OpenAI
GPT-6 Sol
- in /1M
- $2
- out /1M
- $10
- context
- 1.05M
GPT-6 Luna
- in /1M
- $0.10
- out /1M
- $0.50
- context
- 1.05M
GPT-6 Astra
- in /1M
- $10
- out /1M
- $50
- context
- 1.05M
GPT-5.6 Sol
- in /1M
- $4
- out /1M
- $20
- context
- 1.05M
GPT-5.6 Luna
- in /1M
- $0.20
- out /1M
- $1.20
- context
- 1.05M
GPT-5.5 Pro
- in /1M
- $30
- out /1M
- $180
- context
- 1.05M
GPT-5.5
- in /1M
- $5
- out /1M
- $30
- context
- 1.05M
GPT-5.4 nano
- in /1M
- $0.20
- out /1M
- $1.25
- context
- 400K
More news: OpenAI news and ChatGPT updates
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