Data as of October 25, 2026 · How the score is built
Released Jun 24, 2026256K contextByteDance Seed 2.1 model page
Seed 2.1 Turbo
Decision readingSeed 2.1 Turbo is tracked, but not publicly ranked yet. The profile exposes 11 sourced benchmark rows and leaves unsupported fields blank until a published record exists.
Released Jun 24, 2026 — see all recent releases
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.
Capability
Unranked
field median 50Not eligible for a public rank
Price
API rate not published
input median $0.75No comparable first-party hosted token rate
Speed
Not measured
field median 96 tok/sTime to first token not measured
Context
256Ktokens
field median 256,000Maximum output length is tracked separately
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.
Source-linked · 11 displayable benchmark rows
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 | 1 benchmark | Verified | |||
| CodingWeight 20%2 benchmarksVerified | Score pending | 2 benchmarks | Verified | |||
| ReasoningWeight 17%0 benchmarksNot measured | Not measured | 0 benchmarks | Not measured | |||
| MultimodalRank Not rankedWeight 12%7 benchmarksVerified | 76.9 | 7 benchmarks | Verified | |||
| KnowledgeRank Not rankedWeight 12%1 benchmarkVerified | 62.4 | 1 benchmark | Verified | |||
| MultilingualWeight 7%0 benchmarksNot measured | Not measured | 0 benchmarks | Not measured | |||
| Inst. FollowingWeight 5%0 benchmarksNot measured | Not measured | 0 benchmarks | Not measured | |||
| MathWeight 5%0 benchmarksNot measured | Not measured | 0 benchmarks | Not measured |
11 of 766 tracked benchmark slots have displayable evidence · bars run 0–100
Coverage detailsHow 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
- Multimodal7/7 verified
- Knowledge1/1 verified
- MultilingualNot measured
- Inst. FollowingNot measured
- MathNot 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 2.1 | Score67.6% | Versus best verified row Best verified: SWE-2 · 92.8% | Gap25.2 behind | WeightDisplay only | Provider exact |
| NL2Repo | Score43.7% | Versus best verified row Best verified: DeepSeek V4.1 Flash 1017 · 68.2% | Gap24.5 behind | WeightDisplay only | Provider exact |
Agentic1 row
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| Terminal-Bench 2.1 | Score67.6% | Versus best verified row Best verified: SWE-2 · 92.8% | Gap25.2 behind | WeightDisplay only | Provider exact |
Multimodal7 rows
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| MMMU-ProMassive Multi-discipline Multimodal Understanding Pro | Score80.1% | Versus best verified row Best verified: Kimi K3.1 Pro · 84.1% | Gap4 behind | WeightDisplay only | Provider exact |
| CharXivCharXiv Reasoning | Score82.5% | Versus best verified row Best verified: Qwen3.8 Max · 93.5% | Gap11 behind | WeightDisplay only | Provider exact |
| MathVision | Score90.1% | Versus best verified row Best verified: Qwen3.8 Max · 95.2% | Gap5.1 behind | WeightDisplay only | Provider exact |
| ZeroBench | Score11.0% | Versus best verified row Best verified: Muse Spark Open · 50.0% | Gap39 behind | WeightDisplay only | Provider exact |
| BabyVision | Score62.9% | Versus best verified row Best verified: Qwen3.8 Max · 82.0% | Gap19.1 behind | WeightDisplay only | Provider exact |
| ERQA | Score71.3% | Versus best verified row Best verified: Qwen3.8 Max · 77.8% | Gap6.5 behind | WeightDisplay only | Provider exact |
| Video-MME | Score89.0% | Versus best verified row Best verified: Seed 2.1 Pro · 89.2% | Gap0.2 behind | WeightDisplay only | Provider exact |
Knowledge1 row
| Benchmark | Score | Versus best verified row | Gap | Weight | Evidence |
|---|---|---|---|---|---|
| SuperGPQASuperGPQA: Scaling LLM Evaluation Across 285 Graduate Disciplines | Score67.4% | Versus best verified row Best verified: Qwen 3.6 Max (preview) · 73.9% | Gap6.5 behind | WeightDisplay only | Provider exact |
Bars run 0–100; the dark tick marks the best source-verified value
All 11 rowsLineage
The sequence follows explicit supersedes links. Each score is estimated for that model; a relative can inform a sparse estimate but never sets a floor, so a newer release can score below an earlier one. Scores and prices remain blank when the corresponding public row or first-party rate is unavailable.
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-turbo-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-turbo-260628 with the same 256K context window, 256K maximum output, thinking, multimodal, GUI, tool-calling, and structured-output capabilities as Seed 2.1 Pro at a lower rate. 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
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 Turbo, but the public leaderboard excludes this profile until enough non-generated benchmark coverage is available. Only published rows appear above.
Seed 2.1 Turbo 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-turbo-260628 with the same 256K context window, 256K maximum output, thinking, multimodal, GUI, tool-calling, and structured-output capabilities as Seed 2.1 Pro at a lower rate. Volcengine publishes first-party CNY pricing only.
Official exact-value snapshot from ByteDance Seed’s Seed 2.1 model page (June 24, 2026). The Turbo column is mapped onto the same lanes as Seed 2.1 Pro: SuperGPQA, Terminal-Bench 2.1 (coding and agentic), NL2Repo, MathVision, MMMU-Pro, ZEROBench, BabyVision, CharXiv-RQ, ERQA, and VideoMME, using no-tool values. The remaining rows have no exact compatible lane. Provider-run values keep the model out of weighted ranking.
Seed 2.1 Turbo sits in the Seed 2.1 family with Seed 2.1 Pro. Its explicit predecessor is Seed-2.0-Mini. 11 of 766 tracked benchmark slots currently have displayable evidence. Missing categories stay blank.
Last updated October 25, 2026. Runtime fields remain blank until a sourced snapshot exists.
Deployment options
Self-host and provider-specific paths stay separate from benchmark evidence so operating constraints are visible before a score becomes the whole decision.
Where to run Seed 2.1 Turbo by API
OpenRouter is the one host we track that publishes a per-token price for it. Prices read from each host’s own pages on October 20, 2026.
| Host | Input /1M | Output /1M | Cached /1M | Context |
|---|---|---|---|---|
| OpenRouter | $0.50 | $2.50 | — | 262K |
Questions
How does Seed 2.1 Turbo perform overall in AI benchmarks?
Seed 2.1 Turbo 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 Turbo good for knowledge and understanding?
Seed 2.1 Turbo 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 Turbo good for coding and programming?
Seed 2.1 Turbo 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 Turbo good for agentic tool use and computer tasks?
Seed 2.1 Turbo 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 Turbo good for multimodal and grounded tasks?
Seed 2.1 Turbo 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 Turbo?
Seed 2.1 Turbo belongs to the Seed 2.1 family. Related tracked variants include Seed 2.1 Pro. 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 Turbo have full benchmark coverage on BenchLM?
No. Seed 2.1 Turbo currently has 11 source-displayable rows. 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 Turbo?
Seed 2.1 Turbo 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.