Seed 2.1 Turbo is $0.5 cheaper per 1M input tokens (50% lower; 2x difference).
API cost decision in 10 seconds
NewSeed 2.1 Turbo vs Inkling (batch)
Pick Seed 2.1 Turbo for lower cost; pick Inkling (batch) only if the larger context window matters more.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Seed 2.1 Turbo for lower cost; pick Inkling (batch) only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Seed 2.1 Turbo is estimated at $1.75 vs $3.02 for Inkling (batch), saving $1.27 (42.1% lower).
Cost-first pickSeed 2.1 Turbo
Context-first pickInkling (batch)
Sample savings$1.2742.1%
10x traffic gap$12.75
Inkling (batch) has more context, but Seed 2.1 Turbo saves $1.27 on the standard workload. At 10x that traffic, the same price gap is about $12.75. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Seed 2.1 Turbo stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Seed 2.1 Turbo | Inkling (batch) |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Seed 2.1 Turbo | $3.75 | $7.03 |
| Balanced workload | 1M input + 1M output | Seed 2.1 Turbo | $3 | $5.05 |
| Output-heavy chatbot | 1M input + 5M output | Seed 2.1 Turbo | $13 | $21.25 |
Seed 2.1 Turbo is $1.55 cheaper per 1M output tokens (38.3% lower; 1.62x difference).
Inkling (batch) has 262.14K more context (2x larger).
Seed 2.1 Turbo is $1.27 cheaper on the standard workload (42.1% lower).
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Seed 2.1 Turbo has the lower input price; Seed 2.1 Turbo has the lower output price; Inkling (batch) offers the larger context window. For the 1M input plus 500K output sample, Seed 2.1 Turbo is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $1.75 for Seed 2.1 Turbo and $3.02 for Inkling (batch).
Choose Seed 2.1 Turbo when you care most about lower input-token price, and lower output-token price.
Choose Inkling (batch) when you care most about larger context window.
- On the standard 1M input plus 500K output workload, Seed 2.1 Turbo is estimated at $1.75 vs $3.02 for Inkling (batch), saving $1.27 (42.1% lower).
- Seed 2.1 Turbo is $1.27 cheaper on the standard workload (42.1% lower).
- Seed 2.1 Turbo is $0.5 cheaper per 1M input tokens (50% lower; 2x difference).
- Seed 2.1 Turbo is $1.55 cheaper per 1M output tokens (38.3% lower; 1.62x difference).
- Inkling (batch) has 262.14K more context (2x larger).
| Feature | NewSeed 2.1 Turbo (ByteDance Seed) | Inkling (batch) (Thinking Machines) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.5 | $1 |
| Completion Price per 1M tokens | $2.5 | $4.05 |
| Sample Workload Cost 1M input + 500K output | $1.75 | $3.02 |
| Context Window | 262.14K | 524.29K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Seed 2.1 Turbo | On the standard 1M input plus 500K output workload, Seed 2.1 Turbo is estimated at $1.75 vs $3.02 for Inkling (batch), saving $1.27 (42.1% lower). |
| High-volume input processing | Seed 2.1 Turbo | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Seed 2.1 Turbo | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Inkling (batch) | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Seed 1.6 Flash can replace Seed 2.1 Turbo when lower sample workload cost matters most: $0.22.
- Seed-2.0-Mini can replace Seed 2.1 Turbo when lower sample workload cost matters most: $0.3.
- Seed-2.0-Lite can replace Seed 2.1 Turbo when lower sample workload cost matters most: $1.25.
- Seed 1.6 can replace Seed 2.1 Turbo when lower sample workload cost matters most: $1.25.
- Grok 4.20 Multi-Agent offers 2M context with $2.5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- DeepSeek V4 Flash 0731 offers 1.31M context with $0.17 sample workload cost.
- DeepSeek V4 Flash Latest offers 1.31M context with $0.11 sample workload cost.
- DeepSeek V4 Flash 0731 · DeepSeek · #1
- MiMo-V2.5 · Xiaomi · #2
- Hy3 · Tencent · #3
- Ox Alpha · stealth · #4
Cheaper alternatives
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Open Thinking Machines modelsSeed 2.1 Turbo is a multimodal model from ByteDance Seed for coding and long-horizon agent workflows. It is suited for end-to-end software delivery, multi-step task execution, and understanding visual and...
Inkling is an open-weight multimodal mixture-of-experts model from Thinking Machines Lab, with 41B active parameters out of 975B total. It is designed for general-purpose reasoning, coding, agentic and tool-use systems,...