# GPT Realtime 2.1 Mini vs Nemotron 3.5 Lightning 30B A3B NVFP4

> Side-by-side benchmark comparison for GPT Realtime 2.1 Mini and Nemotron 3.5 Lightning 30B A3B NVFP4 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-realtime-2-1-mini-vs-nemotron-3-5-lightning-30b-a3b-nvfp4
- Last updated: September 10, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for GPT Realtime 2.1 Mini and Nemotron 3.5 Lightning 30B A3B NVFP4.

## Summary

- GPT Realtime 2.1 Mini and Nemotron 3.5 Lightning 30B A3B NVFP4 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | GPT Realtime 2.1 Mini | Nemotron 3.5 Lightning 30B A3B NVFP4 |
|----------|----------|----------|
| Creator | OpenAI | NVIDIA |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 128K | 1M |
| Independent public score (not head-to-head) | null | 21.01 |
| Benchmarks Covered | 0 | 13 |
| Pricing (input/output) | $0.60 / $2.40 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- GPT Realtime 2.1 Mini public-lane score: Coming soon
- Nemotron 3.5 Lightning 30B A3B NVFP4 public-lane score: 26.1 (Estimated · #146/152)

| Benchmark | GPT Realtime 2.1 Mini | Nemotron 3.5 Lightning 30B A3B NVFP4 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | Coming soon | 23.5% | Coming soon |
| PinchBench | Coming soon | 83.4% | Coming soon |
| BrowseComp | Coming soon | 36.8% | Coming soon |
| τ³-bench results | Coming soon | 9.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- GPT Realtime 2.1 Mini public-lane score: Coming soon
- Nemotron 3.5 Lightning 30B A3B NVFP4 public-lane score: 30.2 (Estimated · #137/151)

| Benchmark | GPT Realtime 2.1 Mini | Nemotron 3.5 Lightning 30B A3B NVFP4 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | Coming soon | 52.8% | Coming soon |
| SWE Multilingual | Coming soon | 36.5% | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 23.5% | Coming soon |
| SciCode | Coming soon | 31.4% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- GPT Realtime 2.1 Mini public-lane score: Coming soon
- Nemotron 3.5 Lightning 30B A3B NVFP4 public-lane score: 54.8 (Unranked · 1 rankable row)

### Knowledge

- Winner: Insufficient shared evidence
- GPT Realtime 2.1 Mini public-lane score: Coming soon
- Nemotron 3.5 Lightning 30B A3B NVFP4 public-lane score: 30.2 (Estimated · #176/183)

| Benchmark | GPT Realtime 2.1 Mini | Nemotron 3.5 Lightning 30B A3B NVFP4 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 75.6% | Coming soon |
| GPQA-D | Coming soon | 75.6% | Coming soon |
| HLE w/o tools | Coming soon | 10.5% | Coming soon |
| MMLU-Pro | Coming soon | 81.6% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- GPT Realtime 2.1 Mini public-lane score: Coming soon
- Nemotron 3.5 Lightning 30B A3B NVFP4 public-lane score: 72.6 (#64/123)

| Benchmark | GPT Realtime 2.1 Mini | Nemotron 3.5 Lightning 30B A3B NVFP4 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 72.9% | Coming soon |

## FAQ

### Can I compare GPT Realtime 2.1 Mini and Nemotron 3.5 Lightning 30B A3B NVFP4 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

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- [Nemotron 3.5 Lightning 30B A3B NVFP4 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-nemotron-3-5-lightning-30b-a3b-nvfp4)
- [GPT Realtime 2.1 Mini vs GPT-6 Astra](/compare/gpt-6-astra-vs-gpt-realtime-2-1-mini)
- [Nemotron 3.5 Lightning 30B A3B NVFP4 vs GPT-6 Astra](/compare/gpt-6-astra-vs-nemotron-3-5-lightning-30b-a3b-nvfp4)

## Explore More

- [GPT Realtime 2.1 Mini profile](/models/gpt-realtime-2-1-mini)
- [Nemotron 3.5 Lightning 30B A3B NVFP4 profile](/models/nemotron-3-5-lightning-30b-a3b-nvfp4)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)