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.
236B—
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.
128k1.05M
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.
—$0.10
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.
—$0.50
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.
—$0.01
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.
—$0.05OpenAI
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input.
—$0.25OpenAI
—$45.00OpenAI list price
These models have no shared benchmark scores.
Overview
CompanyDeepSeekOpenAI
Release dateDec 10 2024Sep 22 2026
AccessOpen WeightClosed
Model detailsView modelView model

Frequently asked questions

DeepSeek V2.5 (Revised) and GPT-6 Luna don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Only GPT-6 Luna has a verified first-party API price: $0.10 per million input tokens and $0.50 per million output tokens. No pay-as-you-go API rate is tracked for DeepSeek V2.5 (Revised). DeepSeek V2.5 (Revised) shipped 651 days before GPT-6 Luna, so benchmark comparisons should account for the intervening progress.

Context windows are 128k (DeepSeek V2.5 (Revised)) vs 1.05M (GPT-6 Luna). DeepSeek V2.5 (Revised) is open weight, while GPT-6 Luna is closed.

Direct benchmark comparisons are unavailable — DeepSeek V2.5 (Revised) and GPT-6 Luna don't publish scores on any of the same benchmarks.