Compare AI models
| Specifications | ||
ParametersThe learned values that shape how a model responds. B means billion and T means trillion. For mixture-of-experts models, the total count is larger than the number active for each token. Parameter count alone does not measure quality. | 2.8T | 30B |
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider. | 1M | 1M |
| API pricingUSD per 1M tokens · lower wins | ||
Cheapest inputLowest input rate across every provider on OpenRouter, the lab included. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page. | — | $0.00Nvidia |
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input. | — | $0.00Nvidia |
| — | $11.00Darkbloom · int4 | |
| These models have no shared benchmark scores. | ||
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. | — | 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. | — | 75.4% |
| Overview | ||
| Company | Moonshot AI | NVIDIA |
| Release date | Oct 23 2026 | Aug 11 2026 |
| Access | Closed | Open Weight |
| Model details | View model | View model |
Other comparisons
Kimi K3.1 Pro HighspeedvsClaude Haiku 5.5Nemotron 3.5 LightningvsClaude Haiku 5.5Kimi K3.1 Pro HighspeedvsGPT-6.1 SolNemotron 3.5 LightningvsGPT-6.1 SolKimi K3.1 Pro HighspeedvsGemini 4 ArgonNemotron 3.5 LightningvsGemini 4 ArgonKimi K3.1 Pro HighspeedvsMuse Spark OpenNemotron 3.5 LightningvsMuse Spark OpenKimi K3.1 Pro HighspeedvsGrok 4.7Nemotron 3.5 LightningvsGrok 4.7Kimi K3.1 Pro HighspeedvsDeepSeek-V4.1-Flash-1017Nemotron 3.5 LightningvsDeepSeek-V4.1-Flash-1017Frequently asked questions
Kimi K3.1 Pro Highspeed and Nemotron 3.5 Lightning don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Nemotron 3.5 Lightning shipped 73 days before Kimi K3.1 Pro Highspeed, so benchmark comparisons should account for the intervening progress.
Kimi K3.1 Pro Highspeed has 2.8T parameters, while Nemotron 3.5 Lightning has 30B. Context windows are 1M (Kimi K3.1 Pro Highspeed) vs 1M (Nemotron 3.5 Lightning). Kimi K3.1 Pro Highspeed is closed, while Nemotron 3.5 Lightning is open weight.
Direct benchmark comparisons are unavailable — Kimi K3.1 Pro Highspeed and Nemotron 3.5 Lightning don't publish scores on any of the same benchmarks.