Perceptron Mk1 is $0.35 cheaper per 1M input tokens (70% lower; 3.33x difference).
API cost decision in 10 seconds
NewSeed 2.1 Turbo vs Perceptron Mk1
Pick Perceptron Mk1 for lower cost; pick Seed 2.1 Turbo 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 Perceptron Mk1 for lower cost; pick Seed 2.1 Turbo only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Perceptron Mk1 is estimated at $0.9 vs $1.75 for Seed 2.1 Turbo, saving $0.85 (48.6% lower).
Cost-first pickPerceptron Mk1
Context-first pickSeed 2.1 Turbo
Sample savings$0.8548.6%
10x traffic gap$8.5
Seed 2.1 Turbo has more context, but Perceptron Mk1 saves $0.85 on the standard workload. At 10x that traffic, the same price gap is about $8.5. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Perceptron Mk1 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Seed 2.1 Turbo | Perceptron Mk1 |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Perceptron Mk1 | $3.75 | $1.5 |
| Balanced workload | 1M input + 1M output | Perceptron Mk1 | $3 | $1.65 |
| Output-heavy chatbot | 1M input + 5M output | Perceptron Mk1 | $13 | $7.65 |
Perceptron Mk1 is $1 cheaper per 1M output tokens (40% lower; 1.67x difference).
Seed 2.1 Turbo has 229.38K more context (8x larger).
Perceptron Mk1 is $0.85 cheaper on the standard workload (48.6% 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
Perceptron Mk1 has the lower input price; Perceptron Mk1 has the lower output price; Seed 2.1 Turbo offers the larger context window. For the 1M input plus 500K output sample, Perceptron Mk1 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 $0.9 for Perceptron Mk1.
Choose Seed 2.1 Turbo when you care most about larger context window.
Choose Perceptron Mk1 when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Perceptron Mk1 is estimated at $0.9 vs $1.75 for Seed 2.1 Turbo, saving $0.85 (48.6% lower).
- Perceptron Mk1 is $0.85 cheaper on the standard workload (48.6% lower).
- Perceptron Mk1 is $0.35 cheaper per 1M input tokens (70% lower; 3.33x difference).
- Perceptron Mk1 is $1 cheaper per 1M output tokens (40% lower; 1.67x difference).
- Seed 2.1 Turbo has 229.38K more context (8x larger).
| Feature | NewSeed 2.1 Turbo (ByteDance Seed) | Perceptron Mk1 (Perceptron) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.5 | $0.15 |
| Completion Price per 1M tokens | $2.5 | $1.5 |
| Sample Workload Cost 1M input + 500K output | $1.75 | $0.9 |
| Context Window | 262.14K | 32.77K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Perceptron Mk1 | On the standard 1M input plus 500K output workload, Perceptron Mk1 is estimated at $0.9 vs $1.75 for Seed 2.1 Turbo, saving $0.85 (48.6% lower). |
| High-volume input processing | Perceptron Mk1 | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Perceptron Mk1 | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Seed 2.1 Turbo | 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.
- 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.
- Llama 4 Scout offers 1.31M context with $0.25 sample workload cost.
- MiMo-V2.5 offers 1.05M context with $0.28 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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