Models/ByteDance Seed/Seed 2.1 Turbo

Seed 2.1 Turbo

The live OpenRouter slug is Seed 2.1 Turbo. Closed. Official seed.bytedance.com opened (200) and printed no per-million table we could extract. No DeepSWE, AA, or vals row fetched. Seed 2.0 Code is the coding sibling at a different output price.

01

Identity

262,144Context in
262,144Context out
2026-08-12 (OpenRouter created 1786552176)Released
ProprietaryWeights
Canonical name
Seed 2.1 Turbo
Aliases
seed-2-1-turbo, bytedance-seed/seed-2-1-turbo
Continuum hosted id
Not listed as a Continuum hosted id
OpenRouter slug
bytedance-seed/seed-2-1-turbo
Hugging Face
None (closed or unpublished)
Modalities
text, image, video
Closed weights Not on Continuum host list Vendor lab

Closed. OpenRouter catalog 19 Aug 2026: bytedance-seed/seed-2-1-turbo, 262,144 in / 262,144 out; text + image + video in, text out. hugging_face_id empty. Created unix 1786552176 (12 Aug 2026). Not listed as a Continuum hosted id.

This is the live general Seed SKU. Seed 2.0 Code is a sibling card with a different max-out and a different output price. Do not collapse the two.

02

Should I use this for coding agents

Use 2.1 Turbo when you want ByteDance’s current general Seed SKU. Do not invent a coding percent. The only live dollar table we fetched is OpenRouter.

No independent row for this SKU

No independent board lists this exact SKU as of 2026-08-19.

No other card from this lab carries an independent board row either, so there is no sibling worth pointing at.

Boards checked: DeepSWE official (2026-08-13), Artificial Analysis Intelligence Index, vals.ai hero index. Every card that does carry a row is on the coding leaderboard.

DeepSWE

No official DeepSWE mini-swe-agent row for this identity on the public board we fetched.

omitted, not invented as of 2026-08-13 source
Artificial Analysis

No Intelligence Index integer fetched for this identity. Chip omitted.

omitted, not invented as of 2026-08-19 source
Vals Index

We did not open a vals.ai card for this identity. Chip omitted.

omitted, not invented as of 2026-08-19 source

vals 404 as of 19 Aug 2026. Chip omitted.

Named benches, printed only

Copied from AA or vals HTML we opened. 0.0% placeholder bars are omitted. Do not average these into the hero tiles, and do not invent CI, $/task, or steps for Artificial Analysis.

BenchPrintedNoteSourceURLAs of
OpenRouter list pair $0.50 / $2.50 per 1M Catalog row for seed-2-1-turbo. Sibling Seed 2.0 Code is $0.50 / $3.00. OpenRouter catalog source 2026-08-19
03

When not to use it

Trust this before you buy

  • No DeepSWE, AA, or vals row fetched (AA and vals 404). Do not invent a coding percent from the Seed name.
  • Sibling: Seed 2.0 Code if you specifically want the coding SKU (OpenRouter $0.50 / $3.00, a different output price and 131k max out, not this card’s 262k / $2.50).
  • Closed weights. No official HF id and no official GGUF. Continuum does not host it. 262k context is smaller than the 1M peers.
  • Official seed.bytedance.com opened (200) and printed no per-million table. Volcengine pages we opened likewise printed no extractable $. Use OpenRouter only.

Plus is $25/mo with $25 weekly hosted usage. The Mac app stays free with your own keys. Get Plus is not Download for Mac.

04

Artifact

Weights

No official HF id on the OpenRouter catalog. No fake weights button.

  • OpenRouter catalog 19 Aug 2026: $0.50 / $2.50 per million, 262,144 / 262,144, created 1786552176. No cache read/write fields on that catalog row. hugging_face_id empty.
  • Official ByteDance Seed homepage fetched 19 Aug 2026 (200) printed no per-million table we could extract. Omitted, not guessed.
  • AA 404. vals 404. Official DeepSWE board has no exact Seed 2.1 Turbo row.

What you can open

Lab card and OpenRouter listing only. No Hugging Face Files button, because there is no official repo to point at.

Fetched OpenRouter catalog on 2026-08-19. hugging_face_id was empty.

05

Continuum serving

Not listed as a Continuum hosted id. OpenRouter bytedance-seed/seed-2-1-turbo.

Continuum hosted id not on the host list

We list first-party and OpenRouter, plus Continuum only when the live public allowlist named the id. This is not a 15-host routing table.

06

Economics

OpenRouter catalog 19 Aug 2026: $0.50 / $2.50 per million. No cache fields. No DeepSWE $/task. Official Seed homepage stayed empty for per-M dollars.

Price this model Opens the pricing calculator preloaded with Seed 2.1 Turbo.

AA 404 as of 19 Aug 2026. No Index integer, no tok/s, no Index-eval cost.

07

Provenance

ClaimSourceAs of
OR catalog $0.50 / $2.50, 262,144 / 262,144, created 1786552176, no cache fields, hugging_face_id emptyOpenRouter catalog2026-08-19
seed.bytedance.com opened (200); no extractable per-M tableByteDance Seed homepage2026-08-19
AA / vals 404; DeepSWE board has no exact Seed 2.1 Turbo rowArtificial Analysis / vals / DeepSWE2026-08-19
OpenRouter id bytedance-seed/seed-2-1-turbo, context 262,144OpenRouter /api/v1/models2026-08-19
08

Compare, FAQ, and Get Plus

No other card in this cluster shares a published DeepSWE official row we can put next to this one. We will not compare on vendor-blog numbers.

Continue through ByteDance Seed's model family with Seed 2.0 Code.

FAQ

Is this the coding SKU?

No. Seed 2.0 Code is the coding sibling ($0.50 / $3.00, 131k max out). This card is the live general Turbo.

Why no official $?

seed.bytedance.com returned 200 and printed no per-M table we could extract. Inventing one would be a fabricated invoice.

Why does the lab blog disagree with DeepSWE or Scale?

Lab posts pick a harness, an effort, a split, and sometimes a private eval set. DeepSWE publishes the official mini-swe-agent row with cost, tokens, and steps. Scale SWE-bench Pro only counts when the public shared-harness board has a row we can fetch. A higher lab number is usually a different test, not a better one.

OpenAI-compatible call

No Continuum hosted id is verified for this model, so this page does not invent a curl target. Use the first-party API or the OpenRouter slug bytedance-seed/seed-2-1-turbo.

Plus is $25/mo with $25 weekly hosted usage. The Mac app stays free with your own keys. Get Plus is not Download for Mac.