SunsetDiff

Replacement for gpt-realtime-mini: what changes when you switch

The official replacement is gpt-realtime-2.1-mini. gpt-realtime-mini shuts down on 2027-01-20 per OpenAI's deprecation page (checked 2026-10-17). On the labeled example of 10 million input tokens and 2 million output tokens, gpt-realtime-2.1-mini costs $10.8 a month, the same as $10.8 for gpt-realtime-mini.

gpt-realtime-mini model page · OpenAI

Official replacement. Full diff page

gpt-realtime-mini to gpt-realtime-2.1-mini

All values from official sources Checked 2026-10-17.

Price per 1M tokens

Price comparison. Example monthly cost for 10M input tokens and 2M output tokens. Labeled example, not a bill.
FieldOldNewChange
Input $0.6 $0.6 0% (same)
Output $2.4 $2.4 0% (same)
Cached input $0.06 $0.06 Not published
Example monthly cost $10.8 $10.8 Example only

Context and max output

Token limits
LimitOldNewChange
Context window 32,000 128,000 +300% (higher)
Max output 4,096 32,000 +681.3% (higher)

Capabilities that differ

No differing capability values are published for both models.

API changes

No parameter change is listed on the official pages we checked. The sample below only swaps the model id.

Code

python before
from openai import OpenAI
client = OpenAI()
response = client.chat.completions.create(
    model="gpt-realtime-mini",
    messages=[{"role": "user", "content": "Hello"}],
)
python after
from openai import OpenAI
client = OpenAI()
response = client.chat.completions.create(
    model="gpt-realtime-2.1-mini",
    messages=[{"role": "user", "content": "Hello"}],
)
typescript before
import OpenAI from "openai";
const client = new OpenAI();
const response = await client.chat.completions.create({
  model: "gpt-realtime-mini",
  messages: [{ role: "user", content: "Hello" }],
});
typescript after
import OpenAI from "openai";
const client = new OpenAI();
const response = await client.chat.completions.create({
  model: "gpt-realtime-2.1-mini",
  messages: [{ role: "user", content: "Hello" }],
});
curl before
curl https://api.openai.com/v1/chat/completions \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"gpt-realtime-mini","messages":[{"role":"user","content":"Hello"}]}'
curl after
curl https://api.openai.com/v1/chat/completions \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"gpt-realtime-2.1-mini","messages":[{"role":"user","content":"Hello"}]}'

Checklist

  1. Read the shutdown date for gpt-realtime-mini on the linked official page.
  2. Point your requests at gpt-realtime-2.1-mini.
  3. Re-check price, context, and parameters on the provider pages linked here.
  4. Ship the change before the published shutdown date.

Related models

Questions

What is the replacement for gpt-realtime-mini?

The official replacement is gpt-realtime-2.1-mini. gpt-realtime-mini shuts down on 2027-01-20 per OpenAI's deprecation page (checked 2026-10-17). On the labeled example of 10 million input tokens and 2 million output tokens, gpt-realtime-2.1-mini costs $10.8 a month, the same as $10.8 for gpt-realtime-mini.

Is gpt-realtime-2.1-mini cheaper than gpt-realtime-mini?

The labeled example monthly cost is the same: $10.8.

Does gpt-realtime-2.1-mini have a bigger context window than gpt-realtime-mini?

Yes. The context window changes from 32,000 to 128,000 tokens.

Sources

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