Compare AI models

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.
74B—
API pricingUSD per 1M tokens · lower wins · base tier
Input priceWhat you pay for everything you send the model — your question, plus any documents or earlier conversation you include with it.
—$2.00
Output priceWhat you pay for the text the model writes back. It is normally the dearer half: producing an answer costs more than reading one.
—$6.00
Cached input priceA reduced rate for text you send over and over. If every request starts with the same instructions or the same document, the provider keeps a copy ready and charges less to read it again.
—$0.30
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.
—$2.00xAI
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input.
—$6.00xAI
—$700SpaceXSI list price
Benchmarks
Terminal-Bench 2.1Agentic terminal coding — Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Higher is better.
50.98%83.3%
Overview
CompanyNVIDIASpaceXSI
Release dateOct 15 2026Jul 8 2026
AccessOpen WeightClosed
Model detailsView modelView model

Frequently asked questions

Grok 4.5 leads Nemotron 3.5 Bolt 74B on 1 of the 1 benchmark they both report (Terminal-Bench 2.1). Only Grok 4.5 has a verified first-party API price: $2.00 per million input tokens and $6.00 per million output tokens. No pay-as-you-go API rate is tracked for Nemotron 3.5 Bolt 74B. Grok 4.5 shipped 99 days before Nemotron 3.5 Bolt 74B, so benchmark comparisons should account for the intervening progress.

Nemotron 3.5 Bolt 74B is open weight, while Grok 4.5 is closed.

On Terminal-Bench 2.1, Grok 4.5 leads at 83.3% vs Nemotron 3.5 Bolt 74B at 50.98%.