o3 vs Sonar Reasoning Pro

This comparison does not currently contain a protocol-matched coding benchmark for both o3 and Sonar Reasoning Pro, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.

o3 is $1.00 and Sonar Reasoning Pro is $2.00 per million tokens, so o3 is cheaper on this metric. o3 is $4.00 and Sonar Reasoning Pro is $8.00 per million tokens, so o3 is cheaper on this metric.

o3 has the larger sourced context window. o3 supports 200K and Sonar Reasoning Pro supports 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. o3 is not marked open weight; Sonar Reasoning Pro is not marked open weight.

o3 is documented with image input; Sonar Reasoning Pro is not documented with image input. This reflects supported input modalities, not vision quality.

Neither has a larger sourced maximum output. o3 is 100K and Sonar Reasoning Pro is —.

o3: reasoning, tool calling, and image input. Sonar Reasoning Pro: reasoning. Feature support does not establish relative quality.

o3 has 2 sourced provider routes; Sonar Reasoning Pro 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.