Model

GPT-5.1 Chat

Name: GPT-5.1 Chat
Brand: openai

Chat-tuned GPT-5.1 for polished assistants, writing, and product conversations

5 providers · 5 listingsreleased Nov 13, 2025knowledge cutoff 2024-09-30closed weights

$1.25

lowest input /M · OrcaRouter

$10

lowest output /M · OrcaRouter

400K

context window

128K

max output

Compare providers (sorted by listed input price)

5 providers list GPT-5.1 Chat. The cheapest full-context option is Abacus at $1.25/$10 per M. OrcaRouter lists lower but caps context at 128K.

			Cache read /M	Cache write /M		Capabilities	Status
OrcaRouter openai/gpt-5.1-chat-latest	$1.25	$10	$0.125	—	128K	reasoningtoolsstructuredvision		Nov 13, 2025
Helicone gpt-5.1-chat-latest	$1.25	$10	$0.125	—	128K	no reasoningtoolsno structuredno vision		Jan 1, 2025
Merge Gateway openai/gpt-5.1-chat-latest	$1.25	$10	$0.125	—	128K	no reasoningtoolsstructuredvision		Nov 13, 2025
Abacus gpt-5.1-chat-latest	$1.25	$10	—	—	400K	reasoningtoolsno structuredvision		Nov 13, 2025
302.AI gpt-5.1-chat-latest	$1.25	$10	—	—	128K	reasoningtoolsstructuredvision		Nov 14, 2025
ZenMux openai/gpt-5.1-chat	$1.25	$10	$0.12	—	128K	no reasoningtoolsno structuredvision	deprecated	Nov 13, 2025

Best price history

Daily lowest published price across live providers. A lower line is better for the buyer.

Best input /M: $1.25unchanged
Best output /M: $10unchanged
Provider coverage: 5; 6 at the start · 24 snapshots

Published best prices are unchanged.

24 daily snapshots collected from Aug 21, 2026 through Sep 14, 2026. A price chart will appear after the first real move.

Price badge

![GPT-5.1 Chat price](https://www.vaanalytics.in/badge/openai/gpt-5.1-chat-latest.svg)

https://www.vaanalytics.in/badge/openai/gpt-5.1-chat-latest.svg

Live SVG, regenerated on every hourly sync — paste it into a README to always show the current cheapest listed price. Updates when prices change; no build step needed on your side.

Recent changes

Changelog →

deprecatedvia zenmux · Sep 10, 2026
- status: — → deprecated

Prices are per million tokens (USD). “—” means the provider does not publicly list a price for this model. Data from models.dev; verify with the provider before purchasing.