ByteDance model product
Seed 2.1 Pro
ByteDance's flagship next-generation agent model built for real-world productivity.
Updated Aug 12, 2026. Default version: Seed 2.1 Pro
LLMBoard score78.7Seed 2.1 Pro
Coverage100%51 benchmark families
Context windowN/ATokens
Official input priceN/AOfficial price unavailable
Seed 2.1 Pro Specifications
Technical details for the model's default version.
- Version
- Seed 2.1 Pro
- Released
- Jun 24, 2026
- Knowledge cutoff
- Unknown
- Parameters
- N/A
- Context window
- N/A
- Max output
- N/A
- Inputs
- image, text
- Outputs
- text
- Open weights
- No
- License
- Proprietary
Seed 2.1 Pro Capability Profile
This profile uses the model's current scored version. Arena ratings and prices are shown separately.
Seed 2.1 Pro Benchmark Results
Benchmark scores for Seed 2.1 Pro.
| Agent Startup Bench | 0.7 | 1 | 2 | 100.0% | C | |
| ArcAGI2 | 0.6 | 1 | 2 | 100.0% | C | |
| Artifacts Bench | 0.5 | 1 | 3 | 100.0% | C | |
| BLINK | 0.8 | 1 | 13 | 100.0% | C | |
| ChartQAPro | 0.7 | 1 | 2 | 100.0% | C | |
| CharXiv-D | 1.0 | 1 | 16 | 100.0% | C | |
| ContPhy | 0.6 | 1 | 2 | 100.0% | C | |
| CreativeWork | 0.4 | 1 | 2 | 100.0% | C | |
| CrossVid | 0.7 | 1 | 2 | 100.0% | C | |
| Doubao Multi-Turn Bench | 0.5 | 1 | 2 | 100.0% | C | |
| EMMA | 0.8 | 1 | 2 | 100.0% | C | |
| Finance Agent v1.1 | 0.6 | 1 | 2 | 100.0% | C | |
| GameWorld | 0.3 | 1 | 2 | 100.0% | C | |
| GDPval | 0.9 | 1 | 3 | 100.0% | C | |
| Image2FloorPlan | 0.5 | 1 | 2 | 100.0% | C | |
| IMOProof-Adv | 0.5 | 1 | 1 | 100.0% | C | |
| KINA | 0.5 | 1 | 2 | 100.0% | C | |
| LongVideoBench | 0.8 | 1 | 4 | 100.0% | C | |
| MathVerse | 0.9 | 1 | 2 | 100.0% | C | |
| MathVista | 0.9 | 1 | 39 | 100.0% | C | |
| MeasureBench | 0.6 | 1 | 2 | 100.0% | C | |
| Minerva | 0.7 | 1 | 2 | 100.0% | C | |
| MMLongBench-128K | 0.8 | 1 | 2 | 100.0% | C | |
| MMSIBench | 0.4 | 1 | 2 | 100.0% | C | |
| MotionBench | 0.7 | 1 | 3 | 100.0% | C | |
| MSQA | 0.5 | 1 | 2 | 100.0% | C | |
| OfficeQA Pro | 0.7 | 1 | 7 | 100.0% | C | |
| OneMillion Bench | 0.7 | 1 | 2 | 100.0% | C | |
| OSWorld | 0.8 | 1 | 20 | 100.0% | C | |
| OVBench | 0.7 | 1 | 2 | 100.0% | C | |
| OVOBench | 0.8 | 1 | 2 | 100.0% | C | |
| PresentBench | 0.5 | 1 | 2 | 100.0% | C | |
| Repo Env | 0.6 | 1 | 2 | 100.0% | C | |
| SciCode | 0.6 | 1 | 19 | 100.0% | C | |
| SeedClawBench | 0.7 | 1 | 2 | 100.0% | C | |
| SuperChem | 0.6 | 1 | 3 | 100.0% | C | |
| SWE-Atlas | 0.4 | 1 | 2 | 100.0% | C | |
| TOMATO | 0.8 | 1 | 2 | 100.0% | C | |
| Trae Code Gen | 0.6 | 1 | 2 | 100.0% | C | |
| Trae Error Fix | 0.6 | 1 | 2 | 100.0% | C | |
| TreeBench | 0.7 | 1 | 2 | 100.0% | C | |
| TVBench | 0.8 | 1 | 3 | 100.0% | C | |
| VideoHolmes | 0.7 | 1 | 3 | 100.0% | C | |
| Video-MME | 0.9 | 1 | 17 | 100.0% | C | |
| VideoSimpleQA | 0.8 | 1 | 2 | 100.0% | C | |
| VisFactor | 0.5 | 1 | 3 | 100.0% | C | |
| VisuLogic | 0.5 | 1 | 3 | 100.0% | C | |
| VLMsAreBiased | 0.8 | 1 | 2 | 100.0% | C | |
| Web Bench | 0.8 | 1 | 2 | 100.0% | C | |
| WorldBench | 0.7 | 1 | 2 | 100.0% | C | |
| xDailyBench | 0.6 | 1 | 2 | 100.0% | C | |
| AetherCode | 0.7 | 2 | 2 | 0.0% | C | |
| APEX-Agents | 0.3 | 2 | 7 | 83.3% | C | |
| Beyond AIME | 0.9 | 2 | 5 | 75.0% | C | |
| ClawEval-MM | 0.5 | 2 | 3 | 50.0% | C | |
| DUDE | 0.8 | 2 | 2 | 0.0% | C | |
| ERQA | 0.7 | 2 | 23 | 95.5% | C | |
| FrontierCS | 0.5 | 2 | 2 | 0.0% | C | |
| FrontierScience Olympiad | 0.8 | 2 | 3 | 50.0% | C | |
| HorizonMath | 0.0 | 2 | 3 | 50.0% | C | |
| IMO 2025 | 0.7 | 2 | 2 | 0.0% | C | |
| IPhO 2025 | 0.8 | 2 | 2 | 0.0% | C | |
| LiveMathematicianBench | 0.2 | 2 | 2 | 0.0% | C | |
| LiveSports-3K | 0.8 | 2 | 2 | 0.0% | C | |
| LVBench | 0.8 | 2 | 24 | 95.7% | C | |
| MathVision | 0.9 | 2 | 32 | 96.8% | C | |
| MobileWorld | 0.7 | 2 | 3 | 50.0% | C | |
| WildClawBench | 0.6 | 2 | 5 | 75.0% | C | |
| Workspace Bench | 0.5 | 2 | 2 | 0.0% | C | |
| WorldVQA | 0.5 | 2 | 5 | 75.0% | C | |
| BabyVision | 0.7 | 3 | 9 | 75.0% | C | |
| FrontierScience Research | 0.3 | 3 | 4 | 33.3% | C | |
| MCP Atlas | 0.8 | 3 | 31 | 93.3% | C | |
| OCRBench_V2 | 0.6 | 3 | 7 | 66.7% | C | |
| RealWorldQA | 0.9 | 3 | 26 | 92.0% | C | |
| SimpleVQA | 0.7 | 3 | 13 | 83.3% | C | |
| ZEROBench | 0.2 | 3 | 9 | 75.0% | C | |
| Agents' Last Exam | 0.4 | 4 | 5 | 25.0% | C | |
| MMMU-Pro | 0.8 | 4 | 66 | 95.4% | C | |
| Program Bench | 0.5 | 4 | 5 | 25.0% | C | |
| SuperGPQA | 0.7 | 4 | 34 | 90.9% | C | |
| NL2Repo | 0.5 | 5 | 14 | 69.2% | C | |
| PostTrainBench | 0.2 | 5 | 5 | 0.0% | C | |
| DynaMath | 0.7 | 6 | 7 | 16.7% | C | |
| EmbSpatialBench | 0.8 | 6 | 8 | 28.6% | C | |
| MathArena Apex | 0.3 | 6 | 7 | 16.7% | C | |
| BrowseComp | 0.9 | 8 | 58 | 87.7% | C | |
| CyberGym | 0.7 | 8 | 11 | 30.0% | C | |
| DeepSWE | 0.3 | 8 | 10 | 22.2% | C | |
| CharXiv-R | 0.9 | 10 | 48 | 80.8% | C | |
| Humanity's Last Exam | 0.6 | 10 | 93 | 90.2% | C | |
| Toolathlon | 0.5 | 13 | 31 | 60.0% | C | |
| Terminal-Bench 2.1 | 0.7 | 14 | 19 | 27.8% | C | |
| SWE-Bench Pro | 0.6 | 22 | 45 | 52.3% | C |
Seed 2.1 Pro Arena Results
Preference and agent-evaluation results for the default version.
| webdev | overall | 23 | 1522.4 | 6,800 | N/A |
Seed 2.1 Pro Pricing
Official vendor API pricing appears first, followed by individual provider offers.
- Official API
- N/A
- Official provider
- N/A
- Lowest third-party
- N/A
- Tracked offerings
- 0
No provider prices
The default version has no current input or output token prices.
Official prices use only the vendor's configured official Provider and positive standard USD PAYG rates. Third-party offers remain explicitly labeled.
Seed 2.1 Pro Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
| Seed 2.1 Pro | 78.7 | N/A | N/A | N/A | No | Proprietary |
What is Seed 2.1 Pro?
Key information about Seed 2.1 Pro and its available data.
ByteDance's flagship next-generation agent model built for real-world productivity. A deep-thinking model with strong demand understanding, long-horizon planning, and continuous self-repair, it delivers reliable end-to-end results across complex coding, long-chain agents, and multi-step engineering workflows.
1 Pro also advances knowledge, reasoning, and multimodal understanding, with SOTA results across several video understanding benchmarks. 1-pro.
Data as of 2026-08-11.
Seed 2.1 Pro vs nearby models
Open a comparison with the three ranked models immediately above and below this model.
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FAQ
Common questions about Seed 2.1 Pro.
When was Seed 2.1 Pro released?
Seed 2.1 Pro's default version was released on Jun 24, 2026.
How much does Seed 2.1 Pro cost?
No official standard PAYG price is currently available for Seed 2.1 Pro.
Who created Seed 2.1 Pro?
Seed 2.1 Pro was created by ByteDance.
What is the context window for Seed 2.1 Pro?
A context window is not available for the default version.
Is Seed 2.1 Pro open weight?
No. The default version is not marked as having publicly available weights.
How many API providers offer Seed 2.1 Pro?
No provider offering is currently linked to the default version.
What models should I compare Seed 2.1 Pro with?
Nearby ranked alternatives include GLM 5.2, Gemini 3.5 Flash, Qwen3.7 Max.