GPT-4o vs Sonar Deep Research

This comparison does not currently contain a protocol-matched coding benchmark for both GPT-4o and Sonar Deep Research, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.

GPT-4o is $1.25 and Sonar Deep Research is $2.00 per million tokens, so GPT-4o is cheaper on this metric. GPT-4o is $5.00 and Sonar Deep Research is $8.00 per million tokens, so GPT-4o is cheaper on this metric.

Neither model has a larger sourced context window in this comparison. GPT-4o is 128K and Sonar Deep Research is 128K.

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

Both models have the same recorded self-hosting status: unsupported. GPT-4o is not marked open weight; Sonar Deep Research is not marked open weight.

GPT-4o is 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. GPT-4o is 16K and Sonar Deep Research is —.

GPT-4o: tool calling and image input. Sonar Deep Research: reasoning. Feature support does not establish relative quality.

GPT-4o has 2 sourced provider routes; Sonar Deep Research has 2, a tie.

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.