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GPT Realtime 1.5
openai·openai/gpt-realtime-1.5·GA·Closed·gpt series
Speech generation model for controllable voice, narration, and audio delivery
At a glance
Reference price$4.00 / $16.00 per 1M
Cache read $0.40 · Vercel AI Gateway
Lowest paid$4.00 / $16.00
FastRouter Gateway · 1× spread
Context0
Output limit0
Capabilities
Reasoning✓ Tool use? Structured output✓ Temperature✓ Attachments
⚠ Providers report capability flags inconsistently
Modalities
TextAudioImage
Knowledge cutoff—
Released / updated2025-06-01 / 2026-02-23
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 |
|---|---|---|---|---|---|---|---|---|
| FastRouter | Gateway | $4.00 | $16.00 | — | — | 32,000 | 4,096 | |
| Vercel AI Gateway | Cloud | $4.00 | $16.00 | $0.40 | — | 0 | 0 |
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
1Vercel AI Gateway$1,168.00
2FastRouter$1,600.00
The cheapest paid channel is the only channel.
Related models
RouteLLMsame series$3.00 / $15.00GPT-Realtime-2.1same series$4.00 / $24.00NanoGPT Helpsame series$0 / $0Qwen3 Maxcheaper alternative$0.861 / $3.44Qwen3 235B-A22B Instruct 2507cheaper alternative$1.03 / $3.08Qwen3-Next 80B-A3B Instructcheaper alternative$0.144 / $0.574Qwen3-Coder 30B-A3B Instructcheaper alternative$0.216 / $0.861
Price historyone sample accumulated per data sync
Input listOutput listMin blended