Seed 2.1 Pro vs Stable Diffusion 3.5 Large
At a Glance
| Compare | Seed 2.1 ProByteDance Seed |  Stable Diffusion 3.5 LargeStability AI |
|---|---|---|
| Pricing and Limits | ||
| Context windowMaximum documented tokens | Not reported | 0K |
| Model facts checked | Sep 3, 2026View model evidence → | Aug 28, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
Side-by-Side Facts
| Field | Seed 2.1 Pro | stable-diffusion-3.5-large |
|---|---|---|
| Developer | ByteDance Seed | Stability AI |
| Family | Seed 2 1 | Stable Diffusion 3 5 Large |
| Model | Seed 2.1 Pro | stable-diffusion-3.5-large |
| Version | Seed 2.1 Pro | stable-diffusion-3.5-large |
| Lifecycle | active | active |
| Released | 2026-06-23 | 2024-10-22 |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text, Image, Video | Text |
| Output modalities | Text | Image |
| Context window | Unknown | 0K |
| Total parameters | Unknown | 8.1B |
| Active parameters | Unknown | Unknown |
| License | Unknown | other |
| Open weights | No | Yes |
| API available | Yes | Yes |
| Self-hostable | No | Yes |
| Provider access | Unknown | Hugging Face (Standard), Stability AI (Pay as you go) |
| Capabilities | agents, chat, computer-use, generation, reasoning, structured_outputs, tools | generation |
Seed 2.1 Pro Capabilities
Stable Diffusion 3.5 Large Capabilities
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Primary Evidence
Sources and Freshness
Questions
Seed 2.1 Pro vs Stable Diffusion 3.5 Large FAQs
Is Seed 2.1 Pro or Stable Diffusion 3.5 Large better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Seed 2.1 Pro and Stable Diffusion 3.5 Large, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Seed 2.1 Pro or Stable Diffusion 3.5 Large?+
Neither model has a directly sourced input price in this comparison. Neither model has a directly sourced output price in this comparison.
Which has a larger context window, Seed 2.1 Pro or Stable Diffusion 3.5 Large?+
Neither model has a larger sourced context window in this comparison. Seed 2.1 Pro is — and Stable Diffusion 3.5 Large is 0K.
Which performs better in benchmarks, Seed 2.1 Pro or Stable Diffusion 3.5 Large?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can Seed 2.1 Pro or Stable Diffusion 3.5 Large be self-hosted?+
Stable Diffusion 3.5 Large is the only model in this pair currently marked as self-hostable. Seed 2.1 Pro is not marked open weight; Stable Diffusion 3.5 Large is open weight.
Can Seed 2.1 Pro and Stable Diffusion 3.5 Large understand images?+
Seed 2.1 Pro is documented with image input; Stable Diffusion 3.5 Large is not documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Seed 2.1 Pro or Stable Diffusion 3.5 Large?+
Neither has a larger sourced maximum output. Seed 2.1 Pro is — and Stable Diffusion 3.5 Large is —.
Do Seed 2.1 Pro and Stable Diffusion 3.5 Large support reasoning and tool use?+
Seed 2.1 Pro: reasoning, tool calling, and image input. Stable Diffusion 3.5 Large: none of these features are definitively sourced. Feature support does not establish relative quality.
Which is available from more inference providers, Seed 2.1 Pro or Stable Diffusion 3.5 Large?+
Seed 2.1 Pro has 0 sourced provider routes; Stable Diffusion 3.5 Large has 2, so Stable Diffusion 3.5 Large has broader tracked availability.
Which offers better value, Seed 2.1 Pro or Stable Diffusion 3.5 Large?+
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.