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OpenAI GPT-oss-20b
openai·openai/gpt-oss-20b-5·GA·Open weights·gpt-oss series
Open-weight GPT model for self-hosted reasoning and instruction-following workloads
At a glance
Reference price$0.05 / $0.45 per 1M
Cache read — · DigitalOcean
Lowest paid$0.04 / $0.15
NovitaAI Gateway · 1.3× spread
Context128,000
⚠ Providers report 128,000–131,072; the table below is authoritative
Output limit4,096
Capabilities
✓ Reasoning✓ Tool use✓ Structured output✓ TemperatureAttachments
⚠ Providers report capability flags inconsistently
Modalities
TextImage
Knowledge cutoff2024-06
Released / updated2025-08-05 / 2026-04-16
Quality & performance
Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.
Available at 4 providers4 with public prices
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| NovitaAI openai/gpt-oss-20b | Gateway | $0.04 | $0.15 | — | — | 131,072 ⚠ | 32,768 | |
| SiliconFlow openai/gpt-oss-20b | Cloud | $0.04 | $0.18 | — | — | 131,000 ⚠ | 8,000 | |
| Helicone gpt-oss-20b | Gateway | $0.05 | $0.20 | — | — | 131,072 ⚠ | 131,072 | |
| DigitalOcean openai-gpt-oss-20b | Cloud | $0.05 | $0.45 | — | — | 128,000 | 4,096 |
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.
Your usage cost
1NovitaAI$15.50
2SiliconFlow$17.00
3Helicone$20.00
4DigitalOcean$32.50
The cheapest paid channel is the only channel.
Benchmark
No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.
Reasoning control
effort = loweffort = mediumeffort = high
Related models
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Price historyone sample accumulated per data sync
Input list $0.05Output list $0.45Min blended $0.068
Price history accumulates from each data sync; currently only 1 sample(s) (2026-08-21). Each future sync adds a point, and once accumulated a line is drawn here.