ByteDance model product
Seed 2.1 Pro
1 Pro is a ByteDance large language model for coding, long-chain agent tasks, multi-step engineering workflows, and multimodal understanding.
Updated Oct 23, 2026. Default version: Seed 2.1 Pro
LLMBoard Score75.6Seed 2.1 Pro
Coverage40%70 benchmark families
Context windowN/ATokens
Official input priceN/AOfficial price unavailable
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.
Sort by
Benchmark | Score | Rank | Participants | Percentile | Evidence | Evaluated |
|---|
| BenchmarkAgent Startup Bench | Score68.80% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkArcAGI2 | Score62.50% | Rank01 | Participants3 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkBLINK | Score81.40% | Rank01 | Participants17 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkChartQAPro | Score70.90% | Rank01 | Participants4 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkCharXiv-D | Score95.50% | Rank01 | Participants18 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkContPhy | Score63.60% | Rank01 | Participants3 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkCreativeWork | Score42.50% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkCrossVid | Score65.00% | Rank01 | Participants3 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkDoubao Multi-Turn Bench | Score52.50% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkEMMA | Score79.30% | Rank01 | Participants4 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkGameWorld | Score31.20% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkGDPval | Score87.90% | Rank01 | Participants4 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkImage2FloorPlan | Score48.00% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkIMOProof-Adv | Score54.30% | Rank01 | Participants1 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkKINA | Score48.30% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkLongVideoBench | Score80.60% | Rank01 | Participants6 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkMathVerse | Score89.70% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkMathVista | Score90.70% | Rank01 | Participants40 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkMeasureBench | Score62.90% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkMinerva | Score70.70% | Rank01 | Participants4 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkMMLongBench-128K | Score78.30% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkMMSIBench | Score35.90% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkMotionBench | Score74.90% | Rank01 | Participants5 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkMSQA | Score50.20% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkOfficeQA Pro | Score72.20% | Rank01 | Participants12 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkOneMillion Bench | Score68.80% | Rank01 | Participants4 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkOSWorld | Score78.80% | Rank01 | Participants21 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkOVBench | Score70.00% | Rank01 | Participants4 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkOVOBench | Score80.70% | Rank01 | Participants4 | Percentile100.00% | EvidenceC | Evaluated |
| BenchmarkPresentBench | Score54.60% | Rank01 | Participants2 | Percentile100.00% | EvidenceC | Evaluated |
Seed 2.1 Pro Arena Results
Preference and agent-evaluation results for the default version.
Sort by
Arena | Category | Rank | Rating / score | Votes | Observations | Result date |
|---|
| Arenawebdev | Categoryimage to webdev | Rank30 | Rating / score1,509.51 | Votes3,909 | ObservationsN/A | Result date |
| Arenawebdev | Categorywebdev-react | Rank36 | Rating / score1,516.45 | Votes10,520 | ObservationsN/A | Result date |
| Arenawebdev | Categoryoverall | Rank38 | Rating / score1,520.20 | Votes15,123 | ObservationsN/A | Result date |
| Arenawebdev | Categorywebdev | Rank38 | Rating / score1,520.20 | Votes15,123 | ObservationsN/A | Result date |
| Arenawebdev | Categorywebdev-html | Rank43 | Rating / score1,492.54 | Votes2,119 | ObservationsN/A | Result date |
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
- From $0.7072 input, $3.54 output per 1M via Ofox
- Tracked offerings
- 2
Sort by
Provider | Provider model ID | Region | Input / 1M | Output / 1M | Context | Updated |
|---|
| ProviderOfox | Provider model IDvolcengine/doubao-seed-2.1-pro | Regionglobal | Input / 1M$0.7072 | Output / 1M$3.54 | Context256K | Updated |
| ProviderVolcengine Ark | Provider model IDdoubao-seed-2-1-pro-260628 | Regionglobal | Input / 1M$0.8906 | Output / 1M$4.45 | Context256K | Updated |
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 Runtime Performance
Provider-specific output speed and catalog latency for Seed 2.1 Pro. Runtime does not affect the capability score.
No runtime data
No provider-specific speed or latency record is linked to the default version yet.
Output Speed is generated output tokens received per second. Catalog latency is reported separately from observed provider TTFT.
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 Versions
Available versions of this model. The score column identifies the version used in the overall ranking.
Sort by
Version | Released | LLMBoard | Parameters | Context | Max output | Open weights | License |
|---|
| VersionSeed 2.1 Pro | Released | LLMBoard75.61 | ParametersN/A | ContextN/A | Max outputN/A | Open weightsNo | LicenseProprietary |
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What is Seed 2.1 Pro?
Key information about Seed 2.1 Pro and its available data.
1 Pro is a ByteDance model with capabilities in knowledge, reasoning, demand understanding, long-horizon planning, continuous self-repair, and video understanding. 1-pro.
Data as of 2026-10-22.
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. The lowest tracked third-party offer starts at $0.7072 input and $3.54 output via Ofox.
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?
2 provider offerings are linked to the default version.