DeepSeek V4 Pro
deepseek/deepseek-v4-proFrontier-adjacent reasoning at a fraction of Western flagship cost. Sourceable through Webparam on request; not provisioned on this account yet.
1.048576M ctx · R13.7 in · R41.3 out
Category
Reasoning
Extended thinking for math, logic and analysis. Models that spend extra tokens thinking before answering, for problems where being right matters more than being fast. Reach for one when a wrong answer is expensive: the a model writes before it replies arrives as , billed as output, which is why a careful answer costs more than a quick one.
10 models in Reasoning from 9 providers
Top models
Leading reasoning models
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10 models in the directory
How to choose
Choosing a model in Reasoning
- 01
Pay for hard problems only
Reasoning tokens cost real money. Route routine requests to a language model and reserve reasoning models for genuinely hard problems.
- 02
Watch output pricing
Reasoning models bill their thinking. Output price per 1M tokens matters far more here than input price.
- 03
Compare open-weight options
Open reasoning models have closed much of the gap. Check them first when economics matter.