AI Rate Card

GPT-Realtime vs GPT-Realtime-2.1: API price and specs

GPT-Realtime-2.1 is 90% cheaper than GPT-Realtime on input price.

GPT-Realtime-2.1 is 70% cheaper than GPT-Realtime on output price.

GPT-Realtime-2.1 is 84% cheaper than GPT-Realtime on a 1M-in / 200k-out workload.

GPT-Realtime-2.1 has a 300% larger context than GPT-Realtime.

FieldGPT-RealtimeGPT-Realtime-2.1
Lowest input, per 1M$32.00 +900%$3.20
Median input, per 1M$32.00$32.00
Lowest output, per 1M$64.00 +233.3%$19.20
Median output, per 1M$64.00$64.00
Lowest unit price——
Cost of 1M in + 200k out$44.80 +536.4%$7.04
Context32K +75%128K
Max output4K +87.2%32K
Providers2 +60%5
Regions——
Acceptsaudio, image, textaudio, image, text
Returnsaudio, textaudio, text
TypeSpeech to speechSpeech to speech
Free optionnono
Cheapest providerfastroutercometapi

Your own workload: how many tokens the model gets (input) and gives back (output) - for example, in a month. The "Cost" row of the table above is recalculated for these numbers, for each model.

Computed from current offers each time the page opens; the best value of a row is bold, the percent is how far behind the best.

Providers selling both

fastrouter, openai

Frequently asked questions

Which is cheaper, GPT-Realtime or GPT-Realtime-2.1?

GPT-Realtime-2.1 is 90% cheaper than GPT-Realtime on input price. GPT-Realtime-2.1 is 70% cheaper than GPT-Realtime on output price. GPT-Realtime-2.1 is 84% cheaper than GPT-Realtime on a 1M-in / 200k-out workload.

Which has the larger context, GPT-Realtime or GPT-Realtime-2.1?

GPT-Realtime: 32K tokens; GPT-Realtime-2.1: 128K tokens.

Where can I use both GPT-Realtime and GPT-Realtime-2.1?

fastrouter, openai