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GPT OSS 20B
openai·openai/gpt-oss-20b·Deprecated·Open weights·gpt-oss series
Open GPT reasoning model for self-hosted agents and controllable deployments
At a glance
Reference price$0.40 / $1.80 per 1M
Cache read — · Regolo AI
Lowest paid$0.03 / $0.13
OpenRouter Gateway · 13.3× spread
4 more $0 channels
Context128,000
⚠ Providers report 64,000–131,072; the table below is authoritative
Output limit16,384
Capabilities
✓ Reasoning✓ Tool use✓ Structured output✓ TemperatureAttachments
⚠ Providers report capability flags inconsistently
Modalities
Text
Knowledge cutoff2024-10
Released / updated2025-08-05 / 2025-08-05
Quality & performanceArtificial Analysis · Intelligence Index v4.1 · rep. tier high
Intelligence15.2
Value276
Coding20.7
Agentic3.1
Output speed136 tok/s
TTFT0.98 s
Cost per task$0.0250
Value formulaIQ 15.2 ÷ min blended $0.055 = 276
Reasoning tier → intelligence / speed (higher tier = stronger but slower)
lowIQ 14.4 · 170 tok/s
highIQ 15.2 · 136 tok/s
Quality is independently evaluated by Artificial Analysis. Speed/latency are model-level medians.
Available at 45 providers39 with public prices · 4 free
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| Nvidia | First-party | Free | — | — | 131,072 ⚠ | 32,768 | ||
| QVAC | Gateway | Free | — | — | 131,072 ⚠ | 32,768 | ||
| Kenari | Gateway | Free | — | — | 131,072 ⚠ | 32,768 | ||
| LMStudio | Cloud | Free | — | — | 131,072 ⚠ | 32,768 | ||
| OpenRouter | Gateway | $0.03 | $0.13 | $0.03 | — | 131,072 ⚠ | 131,072 | |
| Eden AI | Gateway | $0.03 | $0.13 | — | — | 131,072 ⚠ | 32,768 | |
| Kilo Gateway | Gateway | $0.03 | $0.13 | $0.03 | — | 131,072 ⚠ | 131,072 | |
| Weights & Biases | Cloud | $0.03 | $0.13 | $0.03 | — | 131,072 ⚠ | 131,072 | |
| Deep Infra | Cloud | $0.03 | $0.14 | — | — | 131,072 ⚠ | 16,384 | |
| IO.NET | Cloud | $0.03 | $0.14 | $0.015 | $0.06 | 64,000 ⚠ | 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
1IO.NET$11.20
2OpenRouter$12.50
3Eden AI$12.50
4Kilo Gateway$12.50
5Weights & Biases$12.50
6Deep Infra$13.00
4 more channels offer $0 (Nvidia, QVAC, Kenari etc.); free tiers usually have rate limits and no SLA, excluded from ranking.
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
7 / 45 providers expose no reasoning control (reasoning_options: []).
Related models
Safety GPT OSS 20Bsame series$0.075 / $0.30OpenAI GPT OSS 120Bsame series$2.92 / $2.92OpenAI GPT-oss-20bsame series$0.05 / $0.45DeepSeek V4 Flashcheaper alternative$0.14 / $0.28GPT-5 Nanocheaper alternative$0.05 / $0.40GLM-4.7-Flashcheaper alternative$0 / $0MiMo-V2.5cheaper alternative$0.14 / $0.28
Price historyone sample accumulated per data sync
Input listOutput listMin blended