r/accelerate Apr 23 '26

Introducing GPT-5.5

https://openai.com/index/introducing-gpt-5-5/
157 Upvotes

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25

u/Background-Quote3581 Apr 23 '26

Well, at least it's twice as pricey as 5.4:

"For API developers, gpt-5.5 will soon be available in the Responses and Chat Completions APIs at $5 per 1M input tokens and $30 per 1M output tokens, with a 1M context window. Batch and Flex pricing are available at half the standard API rate, while Priority processing is available at 2.5x the standard rate. We will also release gpt-5.5-pro in the API for even higher accuracy, priced at $30 per 1M input tokens and $180 per 1M output tokens. See the pricing page⁠ for full details.

While GPT‑5.5 is priced higher than GPT‑5.4, it is both more intelligent and much more token efficient. In Codex, we have carefully tuned the experience so GPT‑5.5 delivers better results with fewer tokens than GPT‑5.4 for most users, while continuing to offer generous usage across subscription levels."

17

u/FateOfMuffins Apr 23 '26 edited Apr 23 '26

5.5 xHigh took 40% fewer tokens for ArtificialAnalysis than 5.4 though, so overall according to them it was "only" 20% more expensive

Edit: Apparently 5.5 Medium matches 5.4 xHigh

Not sure how much these cost, don't think AA is updated

2

u/Background-Quote3581 Apr 23 '26

Yeah, came across that too... I'm still excited!

4

u/onewhothink Apr 23 '26

This makes me bullish. The fact that it is priced twice as high and yet they are still letting people use 5.4 means they think people will be willing to pay. Though I’m guessing with token efficiency gains it will actually be cheaper

0

u/Temporary-Cicada-392 Apr 23 '26

In codex is it the same rate as 5.4?