AI model comparison
Nemotron 3 Nano 30B A3B vs gpt-oss-20b
Pricing, context window, benchmarks, and features compared side by side. Or skip the guesswork and send one prompt to both.
NVIDIA
Nemotron 3 Nano 30B A3B
NVIDIA Nemotron 3 Nano 30B A3B is a small language MoE model with highest compute efficiency and accuracy for developers to build specialized agentic AI systems.
- Input / 1M
- $0.06
- Output / 1M
- $0.24
- Context
- 262K
OpenAI
gpt-oss-20b
gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license.
- Input / 1M
- $0.02
- Output / 1M
- $0.09
- Context
- 131K
At a glance
Quick verdict
How the two models stack up on the things people ask about most.
Lower price
gpt-oss-20b
3.0x cheaper for a typical chat
Higher intelligence score
gpt-oss-20b
10 vs 8.9 on Artificial Analysis
Larger context window
Nemotron 3 Nano 30B A3B
262K vs 131K tokens
Newer release
Nemotron 3 Nano 30B A3B
Released December 14, 2025
Benchmarks
Benchmark scores
Independent scores from Artificial Analysis. Higher is better.
Intelligence index
gpt-oss-20b10Coding index
gpt-oss-20bNot availableAgentic index
gpt-oss-20bNot availablePricing
Nemotron 3 Nano 30B A3B vs gpt-oss-20b API pricing
Per-token API rates. Cheaper option highlighted.
| Metric | gpt-oss-20b | |
|---|---|---|
| Input tokensPer 1M tokens | $0.06 | $0.02 |
| Output tokensPer 1M tokens | $0.24 | $0.09 |
| Cached input (read)Per 1M tokens | Not available | $0.01 |
| Cache writePer 1M tokens | Not available | Not available |
What it costs in practice
Estimated cost per 1,000 requests at standard rates. Coding and long-document figures also show the cost when the input is already cached.
Chat message
2K in, 500 out
gpt-oss-20b$0.08Coding task
30K in, 4K out
gpt-oss-20b$0.90$0.63 cachedLong document summary
150K in, 2K out
gpt-oss-20b$2.88$1.53 cachedSpecs
Context window and capabilities
How much each model can read, how much it can write, and what it accepts as input.
| Metric | gpt-oss-20b | |
|---|---|---|
| Context window | 262K tokens | 131K tokens |
| Max output | 236K tokens | 33K tokens |
| Input types | Text | Text |
| Output types | Text | Text |
| Reasoning effort levels | Not available | High, Medium, Low |
| Default reasoning effort | Not available | Medium |
| Release date | December 14, 2025 | August 5, 2025 |
Features
Supported features
API features available for each model.
| Metric | gpt-oss-20b | |
|---|---|---|
| Tool calling | Supported | Supported |
| Structured outputs | Supported | Supported |
| JSON mode | Supported | Supported |
| Reasoning | Supported | Supported |
| Temperature | Supported | Supported |
| Stop sequences | Supported | Supported |
| Deterministic seed | Supported | Supported |
| Verbosity control | Not supported | Not supported |
Keep exploring
More on these models
Other head-to-heads, the full model page, and the alternatives list for each model.
- Nemotron 3 Nano 30B A3B vs Gemini 2.5 Flash Lite
- Nemotron 3 Nano 30B A3B vs Nemotron 3.5 Lightning
- Nemotron 3 Nano 30B A3B vs Nemotron 3 Super
- Nemotron 3 Nano 30B A3B vs Granite 4.2 8B
- Nemotron 3 Nano 30B A3B vs Qwen3 Coder 30B A3B Instruct
- Nemotron 3 Nano 30B A3B vs Llama 3.3 70B Instruct
- Nemotron 3 Nano 30B A3B vs Qwen3 30B A3B Instruct 2507
- Nemotron 3 Nano 30B A3B vs GPT-4.1 Nano
- Nemotron 3 Nano 30B A3B vs Qwen3 32B
- Nemotron 3 Nano 30B A3B vs Qwen3 14B
gpt-oss-20bView full model details- gpt-oss-20b vs Gemini 2.5 Flash Lite
- gpt-oss-20b vs gpt-oss-120b
- gpt-oss-20b vs Mistral Nemo
- gpt-oss-20b vs GPT-5 Nano
- gpt-oss-20b vs Llama 3.1 8B Instruct
- gpt-oss-20b vs Mercury 2.5
- gpt-oss-20b vs Qwen3.5-9B
- gpt-oss-20b vs GPT-4.1 Nano
- gpt-oss-20b vs Mistral Small 3
- gpt-oss-20b vs Qwen3 Coder 30B A3B Instruct
- gpt-oss-20b vs Granite 4.2 8B
Our take
gpt-oss-20b is 3.0x cheaper for a typical chat. gpt-oss-20b scores higher on the Artificial Analysis Intelligence Index (10 vs 8.9). Nemotron 3 Nano 30B A3B has the larger context window (262K vs 131K tokens). The right pick depends on your workload, so the quickest way to settle it is to send the same prompt to both and compare.
FAQ
Frequently asked questions
Is Nemotron 3 Nano 30B A3B or gpt-oss-20b cheaper?
gpt-oss-20b is cheaper for a typical chat (2K input tokens and 500 output tokens). gpt-oss-20b costs $0.02 per 1M input tokens and $0.09 per 1M output tokens, while Nemotron 3 Nano 30B A3B costs $0.06 per 1M input tokens and $0.24 per 1M output tokens.
Which has a bigger context window, Nemotron 3 Nano 30B A3B or gpt-oss-20b?
Nemotron 3 Nano 30B A3B supports up to 262K tokens of context, compared with 131K for gpt-oss-20b.
Is Nemotron 3 Nano 30B A3B smarter than gpt-oss-20b?
On the Artificial Analysis Intelligence Index, Nemotron 3 Nano 30B A3B scores 8.9 and gpt-oss-20b scores 10, putting gpt-oss-20b ahead. Benchmarks don't capture everything, so the best test is running your own prompts through both.
Can I use Nemotron 3 Nano 30B A3B and gpt-oss-20b at the same time?
Yes. Shortcut Chat sends one prompt to multiple models at once, so you can see Nemotron 3 Nano 30B A3B and gpt-oss-20b answer side by side and keep the better response.
Why choose? Ask both.
Send one prompt to Nemotron 3 Nano 30B A3B and gpt-oss-20b at the same time. Compare the answers side by side and keep the best one.