Scheduled for retirement on Oct 21, 2026. Still available at the prices below until then.
Context
131K
Max output
33K
Serving providers
1
Cheapest input
$0.07 /1M
On-demand listed rates, OpenRouter routed quotes and Vercel reseller quotes. Enterprise commitments (committed-use discounts, provisioned throughput, negotiated rates) can be materially lower.

Pricing by serving provider

standard tier · per 1M tokens · click a provider to expand
Serving providerInput /1MOutput /1MEndpoints
Vertex AI Openai ModelsCheapest$0.07$0.251
Standardvertex_ai/openai/gpt-oss-20b-maas
ComponentUnitStandardBatch
Text cached in/1M tok$0.007—
Text input/1M tok$0.07$0.035
Text output/1M tok$0.25$0.125

Price history

listed seller prices, input and output per 1M tokens
Input Output
Input down 7% since first tracked
$0.00$0.10$0.20$0.30Sep 2Jun 22Sep 13Sep 23$0.25$0.07

Cost calculator

estimate your monthly spend on this model
$34
estimated / month

Model IDs

copy the exact identifier for your platform
vertex_ai/openai/gpt-oss-20b-maas

Frequently asked questions

GPT OSS 20B Maas pricing, context and availability

Is GPT OSS 20B Maas still available?

Yes. GPT OSS 20B Maas is scheduled for retirement on 2026-10-21.

How much does GPT OSS 20B Maas cost?

GPT OSS 20B Maas costs $0.07 per 1M input tokens from Vertex AI Openai Models, and $0.25 per 1M output tokens from Vertex AI Openai Models.

What is the context window of GPT OSS 20B Maas?

GPT OSS 20B Maas accepts up to 131K tokens of context and can return up to 33K output tokens.

What can GPT OSS 20B Maas do?

GPT OSS 20B Maas supports reasoning.

Other OpenAI models

compare pricing across the OpenAI lineup
Listed prices from LiteLLM, OpenRouter and Vercel · last checked Oct 14, 2026

Every weekday

AI moves fast. Here's your debrief.

News, analysis, tools, and more.

For people who build with AI