GPT-5.2 vs Stable Diffusion 3.5 Medium

This comparison does not currently contain a protocol-matched coding benchmark for both GPT-5.2 and Stable Diffusion 3.5 Medium, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.

Only GPT-5.2 has a directly sourced input price: $1.75 per million tokens. Only GPT-5.2 has a directly sourced output price: $14.00 per million tokens.

GPT-5.2 has the larger sourced context window. GPT-5.2 supports 400K and Stable Diffusion 3.5 Medium supports 0K.

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

Stable Diffusion 3.5 Medium is the only model in this pair currently marked as self-hostable. GPT-5.2 is not marked open weight; Stable Diffusion 3.5 Medium is open weight.

GPT-5.2 is documented with image input; Stable Diffusion 3.5 Medium is not documented with image input. This reflects supported input modalities, not vision quality.

Neither has a larger sourced maximum output. GPT-5.2 is 128K and Stable Diffusion 3.5 Medium is —.

GPT-5.2: reasoning, tool calling, and image input. Stable Diffusion 3.5 Medium: none of these features are definitively sourced. Feature support does not establish relative quality.

GPT-5.2 has 2 sourced provider routes; Stable Diffusion 3.5 Medium 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.