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Step 5 Preview
Nemotron 3.5 Lightning
Nemotron 3.5 Lightning is an open-weight model from Fireworks AI, released Aug 11, 2026. Its best result is #80 of 85 on SWE-bench with 52.80%. It costs $0.07 per million input tokens and $0.20 per million output tokens, with a 256K-token context window.
- Developer
- Fireworks AI
- Released
- Aug 11, 2026
- Context window
- 256K
- Price in / out, per 1M tokens
- $0.07 / $0.20
- Weights
- Open
- Inputs
- Text
- Reasoning
- Yes
- Tool use
- Yes
- Hugging Face downloads, 30 days
- 832.8K
- Hugging Face likes
- 249
Benchmarks
| Benchmark | Score bar | Accuracy | Rank | Cost / test |
|---|---|---|---|---|
| SWE-benchCoding | 52.80% | 80 / 85 | $0.03 | |
| Vibe Code BenchCoding | 0.00% | 113 / 115 | $0.13 | |
| Tax Agent BenchFinance | 2.59% | 75 / 76 | $0.03 | |
| Legal Research BenchLaw | 2.88% | 82 / 85 | $0.00 |
Vals AI, as of Oct 24, 2026.
Compare Nemotron 3.5 Lightning
Fireworks AI
Questions
Who makes Nemotron 3.5 Lightning?
Nemotron 3.5 Lightning is made by Fireworks AI.
How much does Nemotron 3.5 Lightning cost?
$0.07 per million input tokens and $0.20 per million output tokens, at its provider’s list price.
What is Nemotron 3.5 Lightning’s context window?
256K tokens (262,144).
Is Nemotron 3.5 Lightning open source?
Nemotron 3.5 Lightning has open weights, downloadable from Hugging Face (nvidia/NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16).