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.
4B—
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.
256k500k
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.
18.1%83.3%
Overview
CompanyNVIDIASpaceXSI
Release dateOct 16 2026Jul 8 2026
AccessOpen WeightClosed
Model detailsView modelView model

Frequently asked questions

Grok 4.5 leads Nemotron Labs Dory 1.0 4B on 1 of the 1 benchmark they both report (Terminal-Bench 2.1). Only Grok 4.5 has a verified first-party price for an available API: $2.00 per million input tokens and $6.00 per million output tokens. No currently available pay-as-you-go API rate is tracked for Nemotron Labs Dory 1.0 4B. Grok 4.5 shipped 100 days before Nemotron Labs Dory 1.0 4B, so benchmark comparisons should account for the intervening progress.

Context windows are 256k (Nemotron Labs Dory 1.0 4B) vs 500k (Grok 4.5). Nemotron Labs Dory 1.0 4B is open weight, while Grok 4.5 is closed.

On Terminal-Bench 2.1, Grok 4.5 leads at 83.3% vs Nemotron Labs Dory 1.0 4B at 18.1%.