Kimi K2 (0905)vsNemotron 3.5 Lightning
Kimi K2 (0905) | Nemotron 3.5 Lightning | |
|---|---|---|
| Specifications | ||
ParametersA rough measure of how big the model is. More parameters usually means more capable and more expensive to run, though it is a poor guide on its own — a smaller, newer model often beats a larger, older one. | 1T | 30B |
Context windowHow much text the model can hold in mind at once — your question, any documents you attach, the conversation so far, and its own reply. Go past it and the earliest part falls out of view. | 256k | 1M |
| API pricingUSD per 1M tokens · lower wins | ||
Cheapest inputLowest input rate across third-party providers, excluding the lab itself. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page. | $0.60Novita | — |
Cheapest outputLowest output rate across third-party providers, excluding the lab itself. May come from a different provider than the cheapest input. | $2.50Novita | — |
| Benchmarks | ||
SWE-Bench VerifiedCoding — Real coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 65.8% | 51.6% |
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 75.1% | 75.4% |
| Overview | ||
| Company | Moonshot AI | NVIDIA |
| Release date | Sep 5 2025 | Aug 11 2026 |
| Access | Open Weight | Open Source |
Other comparisons
Frequently asked questions
Kimi K2 (0905) and Nemotron 3.5 Lightning are evenly matched across the 2 benchmarks they both report (SWE-Bench Verified, GPQA Diamond). Kimi K2 (0905) shipped 340 days before Nemotron 3.5 Lightning, so benchmark comparisons should account for the intervening progress.
Kimi K2 (0905) has 1T parameters, while Nemotron 3.5 Lightning has 30B. Context windows are 256k (Kimi K2 (0905)) vs 1M (Nemotron 3.5 Lightning). Kimi K2 (0905) is open weight, while Nemotron 3.5 Lightning is open source.
On SWE-Bench Verified, Kimi K2 (0905) leads at 65.8% vs Nemotron 3.5 Lightning at 51.6%. On GPQA Diamond, Nemotron 3.5 Lightning leads at 75.4% vs Kimi K2 (0905) at 75.1%.
Kimi K2 (0905) was released by Moonshot AI on Sep 5 2025.
Nemotron 3.5 Lightning was released by NVIDIA on Aug 11 2026.
Kimi K2 (0905) leads on SWE-Bench Verified — Kimi K2 (0905) 65.8% vs Nemotron 3.5 Lightning 51.6%.
Nemotron 3.5 Lightning leads on GPQA Diamond — Kimi K2 (0905) 75.1% vs Nemotron 3.5 Lightning 75.4%.
Kimi K2 (0905) has a 256k context window; Nemotron 3.5 Lightning has 1M.
Kimi K2 (0905) is an open weight model released by Moonshot AI. Nemotron 3.5 Lightning is an open source model released by NVIDIA.