DeepSeek V4 Pro Base vs Sonar Deep Research

This comparison does not currently contain a protocol-matched coding benchmark for both DeepSeek V4 Pro Base and Sonar Deep Research, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.

Only Sonar Deep Research has a directly sourced input price: $2.00 per million tokens. Only Sonar Deep Research has a directly sourced output price: $8.00 per million tokens.

DeepSeek V4 Pro Base has the larger sourced context window. DeepSeek V4 Pro Base supports 1,049K and Sonar Deep Research supports 128K.

There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.

DeepSeek V4 Pro Base is the only model in this pair currently marked as self-hostable. DeepSeek V4 Pro Base is open weight; Sonar Deep Research is not marked open weight.

DeepSeek V4 Pro Base is not documented with image input; Sonar Deep Research is not documented with image input. This reflects supported input modalities, not vision quality.

Neither has a larger sourced maximum output. DeepSeek V4 Pro Base is — and Sonar Deep Research is —.

DeepSeek V4 Pro Base: none of these features are definitively sourced. Sonar Deep Research: reasoning. Feature support does not establish relative quality.

DeepSeek V4 Pro Base has 0 sourced provider routes; Sonar Deep Research has 2, so Sonar Deep Research has broader tracked availability.

There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.