gpt-oss-20B
Pricing & Specs
OpenAI · $0.05 input / $0.2 output per 1M tokens · 131K context window
No longer offered on OpenMark
gpt-oss-20B is no longer offered on OpenMark (deprecated or superseded upstream). Its specs are kept here for reference — if you're still running it in production, it's worth benchmarking current alternatives: newer models are often cheaper AND better on the same task.
gpt-oss-20B API Pricing
| Tokens | Price |
|---|---|
| Input | $0.05 / 1M tokens |
| Output | $0.2 / 1M tokens |
Batch API pricing is available via Together at 50%; cache pricing is not published.
What that means in practice
gpt-oss-20B Specs
| Spec | Value |
|---|---|
| Context window | 131K tokens |
| Input modalities | text |
| Output modalities | text |
| Latency (measured by OpenMark) | ~811ms median response |
| Reasoning model | Yes |
| Tool / function calling | Yes |
| JSON mode | Yes |
| Streaming | Yes |
| Prompt caching | No |
| Batch API | Yes |
Capabilities
FAQ
How much does gpt-oss-20B cost?
gpt-oss-20B costs $0.05 per 1M input tokens and $0.2 per 1M output tokens.
What is gpt-oss-20B's context window?
gpt-oss-20B has a 131K-token context window.
Can I test gpt-oss-20B on my own task?
gpt-oss-20B is no longer offered on OpenMark, but you can benchmark its current alternatives from OpenAI and other providers on your own task — free tier available.
Still using gpt-oss-20B?
It's been superseded. Benchmark its current alternatives on your actual
workload — you'll likely find something cheaper AND better. Free tier available.