# GPT-Realtime-1.5 API prices

GPT-Realtime-1.5 (gpt) — 32k context, 4k max output.
2 metered per-token offers from 2 provider(s), in USD per 1M tokens.
Prices as of 2026-10-04.

| Provider | Input $/1M | Output $/1M | Cache read $/1M | Context |
| --- | --- | --- | --- | --- |
| FastRouter | $4 | $16 | — | 32k |
| Vercel AI Gateway | $4 | $16 | $0.4 | — |

## Summary

- Cheapest input: $4 per 1M tokens (FastRouter)
- Cheapest output: $16 per 1M tokens (FastRouter)
- First-party: not listed separately
- Free offers: none
- Subscription plans (not per-token): none
- Released: 2025-06-01
- Inputs: audio, image, text

## FAQ

### What is the cheapest GPT-Realtime-1.5 API?

As of Oct 4, 2026, FastRouter has the lowest GPT-Realtime-1.5 output price at $16 per 1M tokens, and FastRouter has the lowest input price at $4 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.

### How many providers offer GPT-Realtime-1.5?

2 providers list GPT-Realtime-1.5 on Sovyron; 2 of them sell it at a metered per-token price.

### Is GPT-Realtime-1.5 free?

No provider in the Sovyron catalog lists a free tier for GPT-Realtime-1.5.

### What is the context window of GPT-Realtime-1.5?

GPT-Realtime-1.5 supports a 32k-token context window and up to 4k output tokens.

HTML page: https://sovyron.com/models/gpt-realtime-1-5/
Full dataset: https://sovyron.com/data/catalog.json