Seed 2.1 Pro
bytedance-seed/seed-2.1-proFlagship ByteDance Seed 2.1 model for complex multimodal reasoning, coding, and agents
Context
256K
256,000 tokens
Max output
256K
256,000 tokens
Input
$0.71
per 1M tokens
Output
$3.54
per 1M tokens
Providers
3
3 listings
Intelligence
—
Not yet scored
Pricing
USD per 1M tokens · listed by Ofox
| Token type | Standard |
|---|---|
| Input | $0.71 |
| Output | $3.54 |
| Cache read | $0.14 |
| Cache write | $0.002 |
Lowest input price across providers: $0.71.
Capabilities
ReasoningYes
On / off
Tool callYes
Structured outputYes
TemperatureYes
AttachmentsYes
Interleaved reasoningYes
Field: reasoning_content
Open weightsNo
ModeratedUnknown
Input
TextImageVideo
Output
Text
Benchmarks
Published scores and Design Arena Elo
No published benchmark scores for this model yet.
Rankings
Position on each OneAtlas leaderboard
Providers · 3
3 listings
| Provider | Model ID | Context | Input limit | Output | Input $ | Output $ | Reasoning $ | Cache read | Cache write | Audio in | Audio out | Reasoning | Tools | Structured | Temp. | Updated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 NanoGPT | bytedance/doubao-seed-2.1-pro | 256K | 256K | 128K | $1.00 | $5.00 | — | $0.50 | — | — | — | No | No | No | Yes | Jun 23, 2026 |
 Ofox | volcengine/doubao-seed-2.1-pro | 256K | — | 256K | $0.71 | $3.54 | — | $0.14 | $0.002 | — | — | Yes | Yes | Yes | Yes | Jun 23, 2026 |
 Volcengine Ark | doubao-seed-2-1-pro-260628 | 256K | — | 256K | $0.89 | $4.45 | — | $0.18 | — | — | — | Yes | Yes | Yes | Yes | Jun 23, 2026 |