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Seed 2.1 Pro
bytedance-seed·bytedance-seed/seed-2.1-pro·GA·Closed·seed series·NEW
Flagship ByteDance Seed 2.1 model for complex multimodal reasoning, coding, and agents
At a glance
Reference price$0.707 / $3.54 per 1M
Cache read $0.142 · Ofox
Lowest paid$0.707 / $3.54
Ofox Gateway
Context256,000
Output limit256,000
Capabilities
✓ Reasoning✓ Tool use? Structured output✓ Temperature✓ Attachments
Modalities
TextImageVideo
Knowledge cutoff—
Released / updated2026-06-23 / 2026-06-23
Quality & performance
Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.
Available at 1 providers1 with public prices
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| Ofox volcengine/doubao-seed-2.1-pro | Gateway | $0.707 | $3.54 | $0.142 | $0.002 | 256,000 | 256,000 |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Your usage cost
1Ofox$250.37
The cheapest paid channel is the only channel.
Benchmark
No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.
Reasoning control
Toggle (on / off)
Related models
ByteDance Seed 2.1 Turbosame series$0.50 / $2.50ByteDance Seed: Seed 2.1 Turbosame series$0.50 / $2.50Seedance 2.5same series—DeepSeek V4 Procheaper alternative$0.435 / $0.87DeepSeek V4 Flashcheaper alternative$0.14 / $0.28MiniMax-M2.7cheaper alternative$0.30 / $1.20DeepSeek V4 Flash 0731cheaper alternative$0.479 / $1.44
Price historyone sample accumulated per data sync
Input listOutput listMin blended