NVIDIA Nemotron 3.5 Lightning 30B A3B vs gpt-oss-20b
At a Glance
| Compare |  gpt-oss-20bOpenAI | |
|---|---|---|
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | Not reported | $0.030Deepinfra ↗ · Sep 21, 2026 |
| Output priceFrom · USD / 1M tokens | Not reported | $0.13Openrouter ↗ · Sep 22, 2026 |
| Context windowMaximum documented tokens | 1,049K | 131K |
| Model facts checked | Sep 3, 2026View model evidence → | Aug 28, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
| Benchmark | NVIDIA Nemotron 3.5 Lightning 30B-A3B | gpt-oss-20b |
|---|---|---|
| LMArena Text Arenatext-2026-09-13-d25aabda0010 · arena_rating · leader | 1,330.72100% of row best · rating · nvidia-nemotron-3.5-lightning-30b-a3b-nvfp4; 95% CI [1323.44362436, 1337.99938875]; votes 8338; rank 213 | 1,287.3297% of row best · rating · gpt-oss-20b; 95% CI [1280.92242279, 1293.71473349]; votes 10393; rank 246 |
| Overall ResultCounted from the protocol-matched rows above | 1 benchmark winNo overall winner | 0 benchmark winsNo overall winner |
Third-party benchmark Only like-for-like primary-publisher results are shown; raw scores, relative scores, configuration, and token spend remain visible.
Side-by-Side Facts
| Field | NVIDIA Nemotron 3.5 Lightning 30B-A3B | gpt-oss-20b |
|---|---|---|
| Developer | NVIDIA | OpenAI |
| Family | Nvidia Nemotron 3 5 Lightning | Gpt Oss |
| Model | NVIDIA Nemotron 3.5 Lightning 30B-A3B | gpt-oss-20b |
| Version | NVIDIA Nemotron 3.5 Lightning 30B-A3B | gpt-oss-20b |
| Lifecycle | active | active |
| Released | 2026-08-11 | Unknown |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text | Text |
| Output modalities | Text | Text |
| Context window | 1,049K | 131K |
| Total parameters | 30B | 20.9B |
| Active parameters | 3B | 3.6B |
| License | openmdw-1.1 | apache-2.0 |
| Open weights | Yes | Yes |
| API available | Yes | Yes |
| Self-hostable | Yes | Yes |
| Provider access | Fireworks Ai (Standard) | Deepinfra (Standard), Groq (Standard), Hugging Face (Standard), Openrouter (Standard), Together Ai (Serverless, Standard) |
| Capabilities | agents, chat, generation, reasoning, tools | chat, generation, reasoning, tools |
NVIDIA Nemotron 3.5 Lightning 30B A3B Capabilities
gpt-oss-20b Capabilities
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Primary Evidence
Sources and Freshness
Questions
NVIDIA Nemotron 3.5 Lightning 30B A3B vs gpt-oss-20b FAQs
Is NVIDIA Nemotron 3.5 Lightning 30B A3B or gpt-oss-20b better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both NVIDIA Nemotron 3.5 Lightning 30B A3B and gpt-oss-20b, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, NVIDIA Nemotron 3.5 Lightning 30B A3B or gpt-oss-20b?+
Only gpt-oss-20b has a directly sourced input price: $0.030 per million tokens. Only gpt-oss-20b has a directly sourced output price: $0.13 per million tokens.
Which has a larger context window, NVIDIA Nemotron 3.5 Lightning 30B A3B or gpt-oss-20b?+
NVIDIA Nemotron 3.5 Lightning 30B A3B has the larger sourced context window. NVIDIA Nemotron 3.5 Lightning 30B A3B supports 1,049K and gpt-oss-20b supports 131K.
Which performs better in benchmarks, NVIDIA Nemotron 3.5 Lightning 30B A3B or gpt-oss-20b?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can NVIDIA Nemotron 3.5 Lightning 30B A3B or gpt-oss-20b be self-hosted?+
Both models have the same recorded self-hosting status: supported. NVIDIA Nemotron 3.5 Lightning 30B A3B is open weight; gpt-oss-20b is open weight.
Can NVIDIA Nemotron 3.5 Lightning 30B A3B and gpt-oss-20b understand images?+
NVIDIA Nemotron 3.5 Lightning 30B A3B is not documented with image input; gpt-oss-20b is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, NVIDIA Nemotron 3.5 Lightning 30B A3B or gpt-oss-20b?+
Neither has a larger sourced maximum output. NVIDIA Nemotron 3.5 Lightning 30B A3B is — and gpt-oss-20b is —.
Do NVIDIA Nemotron 3.5 Lightning 30B A3B and gpt-oss-20b support reasoning and tool use?+
NVIDIA Nemotron 3.5 Lightning 30B A3B: reasoning and tool calling. gpt-oss-20b: reasoning and tool calling. Feature support does not establish relative quality.
Which is available from more inference providers, NVIDIA Nemotron 3.5 Lightning 30B A3B or gpt-oss-20b?+
NVIDIA Nemotron 3.5 Lightning 30B A3B has 1 sourced provider route; gpt-oss-20b has 5, so gpt-oss-20b has broader tracked availability.
Which offers better value, NVIDIA Nemotron 3.5 Lightning 30B A3B or gpt-oss-20b?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.