Seed 2.0 Code
Language modelAPI only
Seed 2.0 Code
ByteDance
- Released
- February 14, 2026
- Data date
- September 8, 2026
- Benchmark-Meta-Score
- UnavailableNo independent results
- Price
- Input · Output / 1M tokens
- Input
- Text
- Output
- Text
Seed 2.0 Code is ByteDance’s specialized product role for programming work. The API model is listed with 256K tokens of context, multimodal understanding, and tool use in TRAE and through the Volcano interface. Its parameter count and weights are not public, so the name does not identify a local checkpoint.
Compared with the multimodal Seed 2.0 variants, its focus is code understanding, generation, and iterative tool use.
Specifications and access
| Specification | Value and source |
|---|---|
| Weights | ProprietarySource |
| Access | APISource |
| Context window | 256,000 tokensSource |
| Notes | Seed 2.0 variant for coding workloads; parameter count is not published.Source |
| Availability | Developed for coding tasks. Available in TRAE and through the Volcano Engine API. (retrieved 2026-09-22)Source |
| Release | 2026-02-14Source |
| License | proprietary BytePlus termsSource |
| API model ID | seed-2-0-code-preview-260328Source |
| Input | TextSource |
| Output | TextSource |
Our tests
SVG short test
One SVG prompt and fixed output settings. Captures are shown only with 0 reported reasoning tokens or documented lack of reasoning controls. Identical test conditions do not make the models' internal compute identical.
Earlier tests
Pelican on a bicycle
A community classic for free-form SVG drawing.
Seed 2.0 Code
The response reached the token limit. No complete recording is available.
Reasoning (requested): high
Current attempt
- Run date
- Oct 5, 2026
- API provider
- openrouter
- Requested API model
- bytedance-seed/seed-2.0-code
- API model reported in response
- bytedance-seed/seed-2.0-code
- Reasoning setting
- high
- Pinned endpoint
- Seed | bytedance-seed/seed-2.0-code-20260730
- Temperature
- Provider default
- Token limit including reasoning
- 8,192 tokens
- Test protocol
- community-visual-tests-v1
- Technical checks
- Failed
- Response time
- 111.9 s
Not yet visually reviewed. A successful recording does not confirm correct physics or full compliance with the prompt.
Earlier attempts (2)
- Oct 2, 2026API request failedReasoning setting: high
- Oct 1, 2026API request failedReasoning setting: high
Prompt and test conditions
Generate an SVG of a pelican riding a bicycle
Token limit including reasoning: 8,192 tokens
Task origin (Simon Willison)Popularity
15.5 / 100
Sources and data date
| Type | Evidence and data date |
|---|---|
| Price | Base API prices without caching or batch discounts. Higher context tiers and other rates are listed under Costs. |
| Input | Documented modalities. Retrieved September 8, 2026. |
| Output | Documented modalities. Retrieved September 8, 2026. |
| Research status | Research date September 8, 2026. 6 source URLs checked. This documents the inspected sources, not an exhaustive inventory of every publication. |
| Not found in the inspected sources | parameters-billions Original wording No exact value located in the checked primary model card/API documentation. |
| Not found in the inspected sources | active-parameters-billions Original wording No exact value located in the checked primary model card/API documentation. |
| Not found in the inspected sources | knowledge-cutoff Original wording No exact value located in the checked primary model card/API documentation. |
| Not found in the inspected sources | profile-benchmarks Original wording The official Seed2.0 page and Model Card PDF publish benchmark tables for Seed2.0 Pro, Lite, and Mini only. The Code model is named in the wider Seed family but has no exact benchmark result in the checked primary sources. |
| Unresolved | AA benchmark rows Original wording No exact Artificial Analysis model page located in the checked public sitemap. |
| Not published | exact-version-quality-benchmarks Note The official Seed2.0 comparison page's benchmark columns are Seed2.0 Lite (0428), Lite (0215), and Pro (0215). It does not include the separately named Seed 2.0 Code preview endpoint, so no Lite/Pro scores are transferred. |
| Additional source | Model metadata |
| Additional source | Model metadata (retrieved September 22, 2026) · ByteDance Seed 2.0 Code documentation · Editorial description reviewed October 2, 2026 |
| Additional source | ByteDance Seed 2.0 launch · Editorial description reviewed October 2, 2026 |
| Additional source | BytePlus model list · Editorial description reviewed October 2, 2026 |
| Additional source | OpenRouter: Popularity index (derived), CC BY 4.0 |
| Additional source | Vercel AI Gateway: Popularity index (derived), CC BY 4.0 |
| Additional source | Ollama: cumulative downloads for the popularity index |
| Additional source | Replicate: cumulative runs for the popularity index |
| Additional source | Google Trending Now: limited feed selection for Germany and the US |
| Additional source | Creative Commons Attribution 4.0 |