Mistral-Medium-3.5-128B vs o3-pro

This comparison does not currently contain a protocol-matched coding benchmark for both Mistral-Medium-3.5-128B and o3-pro, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.

Only o3-pro has a directly sourced input price: $20.00 per million tokens. Only o3-pro has a directly sourced output price: $80.00 per million tokens.

Mistral-Medium-3.5-128B has the larger sourced context window. Mistral-Medium-3.5-128B supports 262,144 and o3-pro supports 200,000.

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

Mistral-Medium-3.5-128B is the only model in this pair currently marked as self-hostable. Mistral-Medium-3.5-128B is open weight; o3-pro is not marked open weight.

Mistral-Medium-3.5-128B is documented with image input; o3-pro is documented with image input. This reflects supported input modalities, not vision quality.

Neither has a larger sourced maximum output. Mistral-Medium-3.5-128B is — and o3-pro is 100,000.

Mistral-Medium-3.5-128B: reasoning, tool calling, and image input. o3-pro: reasoning, tool calling, and image input. Feature support does not establish relative quality.

Mistral-Medium-3.5-128B has 0 sourced provider routes; o3-pro has 2, so o3-pro 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.