Meta Muse Spark 1.2 Contributor vs NVIDIA Nemotron 3.5 Lightning
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Nemotron 3.5 Lightning is 1.2× cheaper at a typical mix of 3 input tokens per output token.
- Muse Spark 1.2 Contributor accepts longer prompts: 1M vs 262K tokens.
- Nemotron 3.5 Lightning output costs $0.12 per 1M via Darkbloom, against the list price of $0.20.
| Muse Spark 1.2 Contributor | Nemotron 3.5 Lightning | |
|---|---|---|
| Vendor | Meta | NVIDIA |
| Released | 2026-08-21 | 2026-08-11 |
| Input / 1M | $0.10 | $0.07 |
| Output / 1M | $0.20 | $0.20 |
| Cached input / 1M | $0.0020 | $0.04 |
| Blended / 1M (3:1) | $0.125 | $0.103 |
| Context | 1M | 262K |
| Max output | 944K | 236K |
| Accepts | text, image, file, video | text |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 1 | 4 |
| Cheapest provider, output | $0.20 | $0.12 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | — | — |
Cost calculator
Muse Spark 1.2 Contributor
$9.00 per month$0.30 per day
Nemotron 3.5 Lightning
$7.20 per month$0.24 per day
Nemotron 3.5 Lightning saves $1.80 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
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