Seed 2.1 Turbo

Seed 2.1 Turbo is the lighter member of ByteDance's Doubao Large Model 2.1 family, a series launched by Volcano Engine and engineered around three emphasized capability areas: code generation, agentic task execution, and multimodal understanding. The turbo label signals a focus on lower-latency inference compared with the flagship Pro variant, making it well suited to interactive workloads that still need strong reasoning. Within the family it sits alongside Doubao-Seed-2.1-Pro as a positioned alternative for production deployments where responsiveness matters.

Practically, Seed 2.1 Turbo fits use cases such as step-by-step problem solving, image-grounded analysis, and agent workflows that combine tool use with conversational output. Independent model aggregators expose the variant through a ByteDance-branded slug and offer multi-provider routing, with Volcano Engine typically serving as the upstream inference backend. Teams looking for a ByteDance-native model that balances multimodal understanding with agent-friendly behavior will find the turbo tier a pragmatic middle ground, while those needing the deepest reasoning can pair it with the Pro sibling in the same lineup.

OpenRouterbytedance-seed/seed-2-1-turboseed

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Quick Info

Provider: OpenRouter
Model key: bytedance-seed/seed-2-1-turbo
Release date: Aug 12, 2026
Last updated: Aug 12, 2026
Input modalities
Output modalities
Capabilities

Cost

Input token cost: $0.50
Output token cost: $2.50

Limits

Output tokens: 235,929 tokens
Context window: 262,144 tokens

Transparent token rates

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Rates are shown per one million tokens. Combined means one million input plus one million output tokens.

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Latest news about Seed 2.1 Turbo

OpenRouter

CoverageRelease Notes

DataNorth reports that ByteDance announced the Seed 2.1 family, including Seed 2.1 Turbo, on June 24, 2026 at its Volcano Engine FORCE conference, positioning the family as an agent-focused enterprise alternative to Claude Opus 4.6. Seed 2.1 Turbo is described as the faster, lower-cost variant aimed at high-frequency e The article notes ByteDance's claim that Seed 2.1 Pro leads on Terminal Bench 2.1, SWE-Pro, SciCode, OSWorld, MobileWorld, and MMMU-Pro, and positions the family at roughly 80% lower TCO than Claude Opus 4.6, though the piece acknowledges that independent benchmark verification is still pending. The headline benchmark

OpenRouter

CoverageBenchmark

The llm-stats.com benchmark aggregator ranks Seed 2.1 Turbo at position 35 in its composite LLM Stats Score across tracked models. Capability tiers place it in the top 10% for Long Context (6 of 113) and in mid-pack for Math (23 of 317), Reasoning (30 of 348), Search, Finance, Vision, Healthcare, Coding, and Tool Calli Provenance for these benchmark numbers is attributed to seed.bytedance.com and is described as self-reported, which limits their independence and means the strong multimodal-math results have not yet been independently replicated by third-party evaluators. Developers using these rankings for model selection should weig

OpenRouter

CoverageBenchmark

LLM Gateway lists Seed 2.1 Turbo as a ByteDance Seed multimodal model with a 256K (262,144-token) context window and the same $0.50/M input and $2.50/M output pricing seen on OpenRouter. Its listed release date is August 10, 2026, two days earlier than OpenRouter's August 12 listing. The model supports streaming, tool/ A material availability signal on LLM Gateway is that the NanoGPT route for Seed 2.1 Turbo is marked as deactivated since August 19, 2026, which means that gateway can no longer serve the model. Developers evaluating Seed 2.1 Turbo should note the conflicting release date and the route deactivation, and confirm live av