Seed 2.1 Pro vs Hunyuan3D-2.1
Benchmark Performance
Available Benchmarks
Technical Differences
Side-by-Side Facts
| Field | Seed 2.1 Pro | Hunyuan3D-2.1 |
|---|---|---|
| Developer | ByteDance Seed | Tencent |
| Family | Seed 2 1 | Hunyuan3d 2 1 |
| Model | Seed 2.1 Pro | Hunyuan3D-2.1 |
| Version | Seed 2.1 Pro | Hunyuan3D-2.1 |
| Lifecycle | active | active |
| Released | 2026-06-23 | Unknown |
| Knowledge cutoff | Unknown | Unknown |
| Input modalities | Text, Image, Video | Image |
| Output modalities | Text | 3D |
| Context window | Unknown | Unknown |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | other |
| Open weights | No | Yes |
| API available | Yes | Unknown |
| Self-hostable | No | Yes |
| Provider access | Unknown | Unknown |
| Capabilities | agents, chat, computer-use, generation, reasoning, structured_outputs, tools | generation |
10 comparable fields · 9 material differences · Pair passes the primary-source comparison gate
Seed 2.1 Pro Capabilities
Hunyuan3D-2.1 Capabilities
Internal Comparison Graph
Related Comparisons
| A | Pair | B | Context |
|---|---|---|---|
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Seed 2.0 LiteByteDance Seed | vs | Seed 2.1 ProByteDance Seed | family variantsimage, text, video |
Seed 2.1 ProByteDance Seed | vs |  Qwen3.7 MaxQwen | cross-developer peersimage, text, video |
Seed 2.1 ProByteDance Seed | vs | Qwen3.7-PlusQwen | cross-developer peersimage, text, video |
Seed 2.1 ProByteDance Seed | vs |  Gemma 4 E4BGoogle DeepMind | cross-developer peersimage, text, video |
Seed 1.8ByteDance Seed | vs | Seed 2.1 ProByteDance Seed | family variantsimage, text |
Seed 2.1 ProByteDance Seed | vs |  o3-proOpenAI | cross-developer peersimage, text |
Seed 2.1 ProByteDance Seed | vs | Gemini 3.1 ProGoogle DeepMind | cross-developer peerstext |
Seed 2.1 ProByteDance Seed | vs | Gemini Deep Research MaxGoogle DeepMind | cross-developer peerstext |
Seed 2.1 ProByteDance Seed | vs | Gemini Deep ResearchGoogle DeepMind | cross-developer peerstext |
 Nova 2 LiteAmazon | vs | Hunyuan3D-2.1Tencent | cross-developer peersvideo |
Primary Evidence
Sources and Freshness
Questions
Seed 2.1 Pro vs Hunyuan3D-2.1 FAQs
Is Seed 2.1 Pro or Hunyuan3D-2.1 better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both Seed 2.1 Pro and Hunyuan3D-2.1, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, Seed 2.1 Pro or Hunyuan3D-2.1?+
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 Hunyuan3D-2.1?+
Neither model has a larger sourced context window in this comparison. Seed 2.1 Pro is — and Hunyuan3D-2.1 is —.
Which performs better in benchmarks, Seed 2.1 Pro or Hunyuan3D-2.1?+
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 Hunyuan3D-2.1 be self-hosted?+
Hunyuan3D-2.1 is the only model in this pair currently marked as self-hostable. Seed 2.1 Pro is not marked open weight; Hunyuan3D-2.1 is open weight.
Can Seed 2.1 Pro and Hunyuan3D-2.1 understand images?+
Seed 2.1 Pro is documented with image input; Hunyuan3D-2.1 is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, Seed 2.1 Pro or Hunyuan3D-2.1?+
Neither has a larger sourced maximum output. Seed 2.1 Pro is — and Hunyuan3D-2.1 is —.
Do Seed 2.1 Pro and Hunyuan3D-2.1 support reasoning and tool use?+
Seed 2.1 Pro: reasoning, tool calling, and image input. Hunyuan3D-2.1: image input. Feature support does not establish relative quality.
Which is available from more inference providers, Seed 2.1 Pro or Hunyuan3D-2.1?+
Seed 2.1 Pro has 0 sourced provider routes; Hunyuan3D-2.1 has 0, a tie.
Which offers better value, Seed 2.1 Pro or Hunyuan3D-2.1?+
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.