GPT-Realtime-2.1 vs GPT-Realtime-2
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
| Specification |
by OpenAI
|
by OpenAI
|
|---|---|---|
| Overview | ||
| Status | Current flagship | Current flagship |
| Released | Jul 6, 2026 | Oct 1, 2025 |
| Pricing per million tokens | ||
| Input | $4.00/Mtok | $4.00/Mtok |
| Output | $24.00/Mtok | $24.00/Mtok |
| Blended avg | $9.00/Mtok | $9.00/Mtok |
| Cached input | $0.400/Mtok | $0.400/Mtok |
| Price basis | OpenAI prices this model per 1M tokens on three separate modalities: text at $4.00 input / $0.40 cached input / $24.00 output, audio at $32.00 / $0.40 / $64.00, and image input at $5.00 / $0.50. The tracked figures are the TEXT rates, which is how GPT-Realtime-2 is tracked too, so the two rows compare like for like. Every text and audio rate is identical to GPT-Realtime-2; only the model generation differs. | OpenAI prices this model per 1M tokens on three separate modalities: text at $4.00 input / $0.40 cached input / $24.00 output, audio at $32.00 / $0.40 / $64.00, and image input at $5.00 / $0.50. The tracked figures are the TEXT rates. |
| Specifications | ||
| Context window | 128K tokens | 128K tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
audiotextimage
|
audiotext
|
| Providers | ||
| Available from |
OpenAI — $4.00/$24.00/Mtok
|
OpenAI — $4.00/$24.00/Mtok
|
Cost at scale
1M tokens · 50/50 input/output| Volume | GPT-Realtime-2.1 | GPT-Realtime-2 | Savings |
|---|---|---|---|
| 1M tokens | $9 | $9 | $0 (0%) |
| 10M tokens | $90 | $90 | $0 (0%) |
| 100M tokens | $900 | $900 | $0 (0%) |
| 1000M tokens | $9000 | $9000 | $0 (0%) |
When to pick which
distilled from the pricing and spec data above
Pick GPT-Realtime-2.1 if…
- this pairing gives GPT-Realtime-2.1 no edge on price, context, cache discount, or measured performance — pick it only for qualitative fit (ecosystem, compliance, model behavior on your prompts)
Pick GPT-Realtime-2 if…
- this pairing gives GPT-Realtime-2 no edge on price, context, cache discount, or measured performance — pick it only for qualitative fit (ecosystem, compliance, model behavior on your prompts)
Price movement
recorded changes since we began tracking each model · last checked Aug 18, 2026| Model | Changes | Latest move | Old → new $/M |
|---|---|---|---|
| GPT-Realtime-2.1 | 0 | — no move | Stable since we began tracking — no change recorded |
| GPT-Realtime-2 | 1 | price rise on Jun 25, 2026 | $4/$16 → $4/$24/Mtok |
Only GPT-Realtime-2 has changed price since we began tracking; GPT-Realtime-2.1 has held steady.
See all recent price moves →
MODELPRICEWATCH.COM · 2026-08-18
Try GPT-Realtime-2.1 on OpenAI
The cheaper option here — GPT-Realtime-2.1 costs $9.00/Mtok blended on OpenAI.
Summary
GPT-Realtime-2.1 by OpenAI costs $4.00/Mtok input and $24.00/Mtok output, with a 128K-token context window. It supports audio, text, image input.
GPT-Realtime-2 by OpenAI costs $4.00/Mtok input and $24.00/Mtok output, with a 128K-token context window. It supports audio, text input.
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.
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