OpenAI
OpenAI: gpt-oss-20b
openai/gpt-oss-20bHugging Face ↗
gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...
OpenAI: gpt-oss-20b usage over time
OpenRouter share of tokens, by day.
OpenAI: gpt-oss-20b holds 0.43% today, up from 0.25% at the start of the visible window.
Rank history
Adoption curve vs the pantheon
OpenAI: gpt-oss-20b's share plotted against days since first tracked, overlaid on other current leaders on the same axis. The question every new-model page asks: is this one going to make it?
Citable stat
As of 2026-09-01, OpenAI: gpt-oss-20b holds 0.4% of OpenRouter token share, up 0.07pp over 30 days. Source: Tidelines (OpenRouter).
Cost per session
Median dollars spent on one OpenAI: gpt-oss-20b session, by coding agent and session length.
Token rate sets the price; session length and reasoning set the bill.
| Agent | 1 turn | 2–9 turns |
|---|---|---|
| Hermes Agent | $0.0003 | $0.0014 |
Where to run it
OpenAI: gpt-oss-20b pricing by provider
Per-provider pricing, context, and uptime via OpenRouter. Sorted by output price.
OpenAI: gpt-oss-20b is served by 13 tracked endpoints on OpenRouter. The cheapest output price is $0.10 per million tokens from Darkbloom, and the most expensive is $0.30 from Groq. The largest context window offered is 131k tokens. Prices are list rates and refresh daily.
| Provider | Input $/M | Output $/M | Context | Uptime |
|---|---|---|---|---|
| Darkbloom | $0.02 | $0.10 | 131k | 99.88% |
| AkashML | $0.02 | $0.10 | 131k | 99.25% |
| CoreWeave | $0.03 | $0.13 | 131k | 99.99% |
| DeepInfra | $0.03 | $0.14 | 131k | 100.00% |
| Parasail | $0.03 | $0.15 | 131k | 99.97% |
| Phala | $0.04 | $0.15 | 131k | 99.74% |
| Novita | $0.04 | $0.15 | 131k | 99.94% |
| Amazon Bedrock | $0.07 | $0.15 | 131k | — |
| SiliconFlow | $0.04 | $0.18 | 131k | 100.00% |
| Together | $0.05 | $0.20 | 131k | — |
| $0.07 | $0.25 | 131k | 97.55% | |
| Fireworks | $0.07 | $0.30 | 131k | 0.00% |
| Groq | $0.07 | $0.30 | 131k | 99.86% |