GPT-5.1-Instant

Name: GPT-5.1-Instant
Brand: openai
SKU: openai/gpt-5.1-instant

openai·openai/gpt-5.1-instant·GA·Closed·gpt series

Compact GPT model for low-latency assistance and high-volume workloads

Specs & pricing

Input / output per 1M tokens

Reference pricePoe

$1.10 / $9.00

Blended $3.08 · Cache read $0.11

Lowest paidPoeGateway

$1.10 / $9.00

Blended $3.08

Context

128,000

Output limit

16,384

Knowledge cutoff

—

Released / updated

2025-11-12 / 2025-11-12

Capabilities

✓ Reasoning✓ Tool use? Structured outputTemperature✓ Attachments

Modalities

TextImage

Available at 1 providers1 with public prices

Priced only

Provider	Tier	Input	Output	Cache read	Cache write	Context	Output limit	Status
Poe	Gateway	$1.10	$9.00	$0.11	—	128,000	16,384

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.

Reasoning control

Upstream provides no control info

1 / 1 providers expose no reasoning control (reasoning_options: []).

Your usage cost

Input tokens / month

Output tokens / month

Cache hit rate

Common scenarios

1Poe$551.20

The cheapest paid channel is the only channel.

Price historyone sample accumulated per data sync

Input listOutput listMin blended

GPT-5.1-Instant

Specs & pricing

Available at 1 providers1 with public prices

Reasoning control

Your usage cost

Price historyone sample accumulated per data sync

Related models

GPT-5.1-Instant

Specs & pricing

Available at 1 providers1 with public prices

Reasoning control

Your usage cost

Price historyone sample accumulated per data sync

Related models