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GPT-Realtime-2.1
openai·openai/gpt-realtime-2.1·GA·Closed·gpt series·NEW
Realtime speech-to-speech model with configurable reasoning, tool use, and robust voice-agent behavior
At a glance
Official price$4.00 / $24.00 per 1M
Cache read $0.40 · OpenAI
Lowest paid$4.00 / $24.00
OpenAI First-party · 1× spread
Context128,000
Output limit32,000
Capabilities
✓ Reasoning✓ Tool useStructured outputTemperature✓ Attachments
⚠ Providers report capability flags inconsistently
Modalities
TextAudioImage
Knowledge cutoff2024-09-30
Released / updated2026-07-06 / 2026-07-06
Quality & performance
Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.
Available at 2 providers2 with public prices
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| OpenAIOfficial | First-party | $4.00 | $24.00 | $0.40 | — | 128,000 | 32,000 | |
| Vercel AI Gateway | Cloud | $4.00 | $24.00 | $0.40 | — | 128,000 | 32,000 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Your usage cost
1OpenAI · Official$1,568.00
2Vercel AI Gateway$1,568.00
The cheapest paid channel is official.
Benchmark
No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.
Reasoning control
effort = minimaleffort = loweffort = mediumeffort = higheffort = xhigh
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Price historyone sample accumulated per data sync
Input listOutput listMin blended