MODEL REFERENCE / OPENAI

GPT-Realtime-2.1 Mini
verified model reference.

Lower-cost, lower-latency distilled OpenAI realtime voice-agent model with reasoning and tool support.

128,000context tokens
32,000max output
2026-10-12last verified

PRIMARY-SOURCE VERIFIED

GPT-Realtime-2.1 Mini at a glance.

OpenAI documents a 128,000-token context window. Input modalities: text + image + audio. Output: text + audio. Pricing status: Official paid API.

MODEL IDgpt-realtime-2.1-mini
CONTEXT WINDOW128,000tokens
MAX OUTPUT32,000
KNOWLEDGE CUTOFF2024-09-30
STANDARD INPUT$0.60per 1 million TEXT tokens (audio/image separate)
STANDARD OUTPUT$2.40per 1 million TEXT tokens (audio/image separate)

CAPABILITY CONTRACT

Published model behavior.

REASONING

supported

Only provider-documented reasoning controls are shown; missing controls remain unpublished rather than inferred.

INPUT

text + image + audio

Input modalities come from the cited official model documentation.

OUTPUT

text + audio

Output modality and output-limit claims remain separate so an undocumented token cap is not guessed.

PRICING STATUS

Official paid API.

$0.60 input · $0.06 cached · $2.40 output per 1 million TEXT tokens (audio/image separate).

SXF preserves the provider-published native billing basis. Only calculator-eligible generative token models enter token-cost arithmetic; specialist units and input-only embeddings remain visible without forced conversion.

CAVEATS

What the source record does not assume.

01

Displayed Standard prices are TEXT ONLY: $0.60 input, $0.06 cached and $2.40 output per 1M text tokens.

02

AUDIO Standard prices: $10.00 input, $0.30 cached input and $20.00 output per 1M audio tokens. IMAGE input $0.80 and cached $0.08 per 1M image tokens.

03

For WebRTC, WebSocket or SIP voice sessions, text-only token pricing is not a reliable total-session estimate; the generic token calculator is disabled.

EXPLORE

Keep the model in context.

OFFICIAL SOURCES

Verification links.

WHAT CHANGED

GPT-Realtime-2.1 Mini: what changed.

No post-baseline factual changes recorded for GPT-Realtime-2.1 Mini since 2026-10-12.

VERIFIED BASELINE2026-10-12Current facts remain aligned with the SXF ledger.

VERIFIED CHANGE HISTORY

GPT-Realtime-2.1 Mini verified history.

Open ledger JSON ↗
BASELINE

GPT-Realtime-2.1 Mini

Baseline verified: 128,000 context · 32,000 max output · $0.60 input / $0.06 cached / $2.40 output per 1 million TEXT tokens (audio/image separate)

Official evidence ↗

Append-only SXF ledger · 1 verified event · chain head b12eeb63a07e…