OpenAI · current

GPT Realtime 1.5

GPT Realtime 1.5 is attributed to OpenAI in the catalog. It accepts text, audio, and image input and produces text and audio output. Reported capabilities include tool calling.

Compare model

Report an error Model and price history

Modalities

Hosted provider token rates

$4 / $16

USD per 1M input / output tokens · Vercel AI Gateway

Context

32K

Released

2025-06-01

Knowledge cutoff

Unknown

No recent lab-operated provider rate is available. Showing the third-party host with the lowest input rate + ¼ output rate. This is one offering, not an average; other providers, modalities, tiers, and fees may differ.

Where to use it

2 observed offerings · token prices in USD per million where available

Estimate your workload cost

FastRouter

openai/gpt-realtime-1.5

current

Input

Output

$16

Cache

—

Context

32K

Max output

Reasoning: No
Tool calling: Yes
Structured output: Unknown
Temperature: Yes

Historical price

Vercel AI Gateway

openai/gpt-realtime-1.5

current

Input

Output

$16

Cache

$0.40

Context

32K

Max output

Reasoning: No
Tool calling: Yes
Structured output: Unknown
Temperature: Yes

Recent price

Limits and capabilities reflect each provider’s listed offering. Unknown means support was not reported.

Provider / API ID	Status	Context	Max output	Input	Output	Cache read	Reasoning	Tools	Structured	Temperature
FastRouter openai/gpt-realtime-1.5	currentHistorical price	32K	4K	$4	$16	—	No	Yes	Unknown	Yes
Vercel AI Gateway openai/gpt-realtime-1.5	currentRecent price	32K	4K	$4	$16	$0.40	No	Yes	Unknown	Yes

Capabilities and limits

Input: text, audio, image
Output: text, audio
Max output: 4K
Weights: Closed (source-reported)
Release: 2025-06-01
Knowledge cutoff: Unknown
Family: gpt

Tool calling · Vision

Provider-specific limits and support can differ.

Plan a model evaluation

Evaluate quality and latency on examples from your intended use before choosing a model.

Explore available evidence

Models to compare

Candidates match reported specifications; they are not tested replacements.

GPT-Realtime-2.1OpenAI · 128K contextCompare →Qwen3 Omni 30B A3B InstructAlibaba · 66K contextCompare →Qwen3-Omni FlashAlibaba · 66K contextCompare →

Model and price history

Latest recorded change: source refresh · 2026-10-21

Model changes (2)

source refresh · 2026-10-21

{
  "before": {
    "context_tokens": 0,
    "supports_tools": false,
    "max_output_tokens": 0
  },
  "after": {
    "context_tokens": 32000,
    "supports_tools": true,
    "max_output_tokens": 4096
  }
}

source refresh · 2026-10-20

{
  "before": {
    "model_type": null,
    "knowledge_cutoff_reported": null
  },
  "after": {
    "model_type": "realtime",
    "knowledge_cutoff_reported": "2024-09-30"
  }
}

Price history (49 observations)

Date	Provider	Input / output
2026-11-01	Vercel AI Gateway	$4 / $16
2026-10-31	Vercel AI Gateway	$4 / $16
2026-10-30	Vercel AI Gateway	$4 / $16
2026-10-29	Vercel AI Gateway	$4 / $16
2026-10-28	Vercel AI Gateway	$4 / $16
2026-10-27	Vercel AI Gateway	$4 / $16
2026-10-27	Vercel AI Gateway	$4 / $16
2026-10-27	Vercel AI Gateway	$4 / $16
2026-10-27	Vercel AI Gateway	$4 / $16
2026-10-26	Vercel AI Gateway	$4 / $16
2026-10-25	Vercel AI Gateway	$4 / $16
2026-10-24	Vercel AI Gateway	$4 / $16
2026-10-24	Vercel AI Gateway	$4 / $16
2026-10-24	Vercel AI Gateway	$4 / $16
2026-10-23	Vercel AI Gateway	$4 / $16
2026-10-23	Vercel AI Gateway	$4 / $16
2026-10-23	Vercel AI Gateway	$4 / $16
2026-10-23	Vercel AI Gateway	$4 / $16
2026-10-23	Vercel AI Gateway	$4 / $16
2026-10-22	Vercel AI Gateway	$4 / $16
2026-10-21	Vercel AI Gateway	$4 / $16
2026-10-21	FastRouter	$4 / $16
2026-10-20	Vercel AI Gateway	$4 / $16
2026-10-20	FastRouter	$4 / $16
2026-10-19	Vercel AI Gateway	$4 / $16
2026-10-19	FastRouter	$4 / $16
2026-10-18	Vercel AI Gateway	$4 / $16
2026-10-18	FastRouter	$4 / $16
2026-10-17	Vercel AI Gateway	$4 / $16
2026-10-17	FastRouter	$4 / $16
2026-10-12	Vercel AI Gateway	$4 / $16
2026-10-12	FastRouter	$4 / $16
2026-10-12	Vercel AI Gateway	$4 / $16
2026-10-12	FastRouter	$4 / $16
2026-10-11	Vercel AI Gateway	$4 / $16
2026-10-11	FastRouter	$4 / $16
2026-10-10	Vercel AI Gateway	$4 / $16
2026-10-10	FastRouter	$4 / $16
2026-10-09	Vercel AI Gateway	$4 / $16
2026-10-09	FastRouter	$4 / $16
2026-10-09	FastRouter	$4 / $16
2026-10-08	FastRouter	$4 / $16
2026-10-07	FastRouter	$4 / $16
2026-09-22	FastRouter	$4 / $16
2026-09-21	FastRouter	$4 / $16
2026-09-20	FastRouter	$4 / $16
2026-09-19	FastRouter	$4 / $16
2026-09-18	FastRouter	$4 / $16
2026-09-17	FastRouter	$4 / $16