Capability
Unranked
field median 56.2
Not eligible for a public rank
Seed 2.1 Pro
Released Jun 24, 2026 — see all recent releases
Decision reading
Seed 2.1 Pro is tracked, but not publicly ranked yet. The profile exposes 11 sourced benchmark rows and leaves unsupported fields blank until a published record exists.
Data as of September 10, 2026 · How the score is built
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Strongest published evidence
Published rows are visible, but no category has enough eligible evidence for a comparative rank.
Validate before choosing
11 published rows leave some tracked benchmark slots empty. No comparable first-party API token rate is published.
Decision snapshot
Each value carries a field reference instead of floating alone. Markers compare this model with the current ranked and priced catalog; they are not absolute quality thresholds.
Price
API rate not published
input median $1
No comparable first-party hosted token rate
Speed
Not measured
field median 86.5 tok/s
Time to first token not measured
Context
256Ktokens
field median 256,000
Maximum output length is tracked separately
How much of this is verified
Coverage is split by category so a strong number never hides a thin evidence base. Verified means the row is tied to a published source; provisional rows remain visible but separate.
- Agentic1/1 verified
- Coding2/2 verified
- ReasoningNot measured
- Knowledge1/1 verified
- MathNot measured
- MultilingualNot measured
- Multimodal7/7 verified
- Inst. FollowingNot measured
Verified sourceProvisionalNot measured
Spec sheet
Each documented value carries its source. Missing fields stay visible as not sourced or not published, rather than disappearing from the page.
- API model ID
- doubao-seed-2-1-pro-260628Volcengine model pricing
- Context window
- 256KVolcengine model pricing
- Maximum output
- Not sourced yet
- Knowledge cutoff
- Not sourced yet
- Input modalities
- Not sourced yet
- Output modalities
- Not sourced yet
- Parameters
- Not disclosed by the provider
- Availability
- Served through Volcano Engine and Volcano Ark as doubao-seed-2-1-pro-260628 with a 256K context window, 256K maximum output, deep thinking, multimodal understanding, GUI task processing, tool calling, and structured output. Volcengine publishes first-party CNY pricing only.
- Cloud regions
- Not tracked yet
- Lifecycle
- Current
- API capabilities
- Tool calling, structured outputs, and batch support are not tracked yet
- Prompt caching
- Not documented in the pricing recordVolcengine model pricing
- Self-host
- Weights are not published
- Rate limits
- Not tracked yet
Category score record
Scores and ranks appear only where published evidence can be displayed. The table keeps the score, weight, cohort, and evidence state together.
| Category | Score | Rank | Percentile | Weight | Benchmarks | Evidence |
|---|---|---|---|---|---|---|
| AgenticWeight 22%1 benchmarkVerified | Score pending | Not ranked | Not available | 22% | 1 benchmark | Verified |
| CodingWeight 20%2 benchmarksVerified | Score pending | Not ranked | Not available | 20% | 2 benchmarks | Verified |
| ReasoningWeight 17%0 benchmarksNot measured | Not measured | Not ranked | Not available | 17% | 0 benchmarks | Not measured |
| KnowledgeRank Not rankedWeight 12%1 benchmarkVerified | 67.6 | Not ranked | Not available | 12% | 1 benchmark | Verified |
| MathWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
| MultilingualWeight 7%0 benchmarksNot measured | Not measured | Not ranked | Not available | 7% | 0 benchmarks | Not measured |
| MultimodalRank Not rankedWeight 12%7 benchmarksVerified | 77.9 | Not ranked | Not available | 12% | 7 benchmarks | Verified |
| Inst. FollowingWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
Benchmark ledger
Coding opens by default. The marker compares each value with the best source-verified result in the catalog; provisional leaders do not set the reference. Expand the remaining categories for every published row.
Coding2 rows
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| Terminal-Bench 2.1Terminal-Bench 2.1 (provider run) | Score71.0% | Versus best verified row Best verified: SWE-2 · 92.8% | Gap21.8 behind | WeightDisplay only | Provider exact |
| NL2Repo | Score47% | Versus best verified row Best verified: DeepSeek V4.1 Flash · 65.4% | Gap18.4 behind | WeightDisplay only | Provider exact |
Agentic1 row
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| Terminal-Bench 2.1Terminal-Bench 2.1 (provider run) | Score71.0% | Versus best verified row Best verified: SWE-2 · 92.8% | Gap21.8 behind | WeightDisplay only | Provider exact |
Knowledge1 row
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| SuperGPQASuperGPQA: Scaling LLM Evaluation Across 285 Graduate Disciplines | Score70.8% | Versus best verified row Best verified: Qwen 3.6 Max (preview) · 73.9% | Gap3.1 behind | WeightWeighted 7% | Provider exact |
Multimodal7 rows
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| MMMU-ProMassive Multi-discipline Multimodal Understanding Pro | Score81.6% | Versus best verified row Best verified: Gemini 3.5 Flash · 83.6% | Gap2 behind | WeightWeighted 40% | Provider exact |
| CharXivCharXiv Reasoning | Score85.4% | Versus best verified row Best verified: Qwen3.8 Max · 93.5% | Gap8.1 behind | WeightWeighted 20% | Provider exact |
| MathVision | Score92.6% | Versus best verified row Best verified: Qwen3.8 Max · 95.2% | Gap2.6 behind | WeightDisplay only | Provider exact |
| ZeroBench | Score18.0% | Versus best verified row Best verified: Muse Spark · 33.0% | Gap15 behind | WeightDisplay only | Provider exact |
| BabyVision | Score73.7% | Versus best verified row Best verified: Qwen3.8 Max · 82.0% | Gap8.3 behind | WeightDisplay only | Provider exact |
| ERQA | Score72.0% | Versus best verified row Best verified: Qwen3.8 Max · 77.8% | Gap5.8 behind | WeightDisplay only | Provider exact |
| Video-MME | Score89.2% | Versus best verified row Best verified: Seed 2.1 Pro · 89.2% | GapBest verified | WeightDisplay only | Provider exact |
Lineage
The sequence follows explicit supersedes links. A successor's displayed score stays at least 0.1 points above its predecessor; raw benchmark rows do not move. Scores and prices remain blank when the corresponding public row or first-party rate is unavailable.
Mar 10, 2026
Seed-2.0-LiteNot publicly ranked · Price not listed
Jun 24, 2026 · you are here
Seed 2.1 ProNot publicly ranked · Price not listed
Pro
How to read this profile
The visual layer above carries the decisions. These notes preserve the model, ranking, coverage, and family context behind the numbers.
We track Seed 2.1 Pro, but the public leaderboard excludes this profile until enough non-generated benchmark coverage is available. Only published rows appear above.
Seed 2.1 Pro is a proprietary model with a 256K context window. It uses an explicit reasoning mode, which can improve complex problem solving while adding latency and token use.
Served through Volcano Engine and Volcano Ark as doubao-seed-2-1-pro-260628 with a 256K context window, 256K maximum output, deep thinking, multimodal understanding, GUI task processing, tool calling, and structured output. Volcengine publishes first-party CNY pricing only.
Official exact-value snapshot from ByteDance Seed’s Seed 2.1 model page (June 24, 2026 release at the Volcano Engine FORCE conference). BenchLM maps only the rows with an exact compatible lane: SuperGPQA, Terminal-Bench 2.1 (mirrored in coding and agentic), NL2Repo, MathVision, MMMU-Pro, ZEROBench, BabyVision, CharXiv-RQ, ERQA, and VideoMME, using the no-tool value where ByteDance prints a with-tool variant in parentheses. KINA, BeyondAIME, Workspace Bench, Agent Startup Bench, xDailyBench, ProgramBench, SWE-Atlas, WorldVQA, MMLongBench-128K, TOMATO, Minerva, OVOBench, and VideoSimpleQA stay outside the schema. Every row is provider-run, so the model stays out of weighted ranking.
Seed 2.1 Pro sits in the Seed 2.1 family with Seed 2.1 Turbo. Its explicit predecessor is Seed-2.0-Lite. 11 of 434 tracked benchmark slots currently have displayable evidence. Missing categories stay blank.
Radar
Full release historySeed 2.1 Pro release history
Seed 2.1 Pro and Seed 2.1 Turbo released
ByteDance · Model release
Source confirmed
Radar confirmed these at the source. Use Seed 2.1 Pro in your work? Explore Radar to follow supported changes and choose your alerts.
Frequently asked questions
How does Seed 2.1 Pro perform overall in AI benchmarks?
Seed 2.1 Pro has 11 source-displayable benchmark rows, but it does not qualify for a public overall rank. The available rows remain visible by category without being converted into a site-wide score. Missing evidence stays blank instead of being estimated from an earlier model.
Is Seed 2.1 Pro good for knowledge and understanding?
Seed 2.1 Pro has source-displayable benchmark coverage for knowledge and understanding, but the public category table does not assign it a rank there. The individual rows remain available for inspection. A missing category position means the evidence threshold was not met; it does not convert the model's unmeasured work into a zero.
Is Seed 2.1 Pro good for coding and programming?
Seed 2.1 Pro has source-displayable benchmark coverage for coding and programming, but the public category table does not assign it a rank there. The individual rows remain available for inspection. A missing category position means the evidence threshold was not met; it does not convert the model's unmeasured work into a zero.
Is Seed 2.1 Pro good for agentic tool use and computer tasks?
Seed 2.1 Pro has source-displayable benchmark coverage for agentic tool use and computer tasks, but the public category table does not assign it a rank there. The individual rows remain available for inspection. A missing category position means the evidence threshold was not met; it does not convert the model's unmeasured work into a zero.
Is Seed 2.1 Pro good for multimodal and grounded tasks?
Seed 2.1 Pro has source-displayable benchmark coverage for multimodal and grounded tasks, but the public category table does not assign it a rank there. The individual rows remain available for inspection. A missing category position means the evidence threshold was not met; it does not convert the model's unmeasured work into a zero.
Which sibling models are related to Seed 2.1 Pro?
Seed 2.1 Pro belongs to the Seed 2.1 family. Related tracked variants include Seed 2.1 Turbo. A sibling link indicates shared lineage or a documented configuration relationship; it does not mean the variants have identical pricing, context limits, benchmark evidence, or deployment behavior. Compare before switching.
Does Seed 2.1 Pro have full benchmark coverage on BenchLM?
No. Seed 2.1 Pro currently has 11 source-displayable rows across 434 tracked benchmark slots. The profile exposes published, non-generated evidence and leaves missing categories blank until an exact evaluation is available. Coverage describes how much was measured; it is not a penalty added to an individual benchmark result.
What is the context window size of Seed 2.1 Pro?
Seed 2.1 Pro has a documented context window of 256K. That figure is the maximum combined prompt and retained-conversation space reported for this exact model; it is not the maximum output length. The profile keeps output limits separate because providers often publish those limits independently.
Compare Seed 2.1 Pro with every tracked model482 comparisons
Last updated September 10, 2026. Runtime fields remain blank until a sourced snapshot exists.
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