API cost decision in 10 seconds

NewDeepSeek V4.1 Flash 1017 (batch) vs Ternary Bonsai 2 9B

Pick DeepSeek V4.1 Flash 1017 (batch) when budget and context both matter.

Page updated:  Data confirmed:  Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick DeepSeek V4.1 Flash 1017 (batch) when budget and context both matter.

On the standard 1M input plus 500K output workload, DeepSeek V4.1 Flash 1017 (batch) is estimated at $0.11 vs $0.15 for Ternary Bonsai 2 9B, saving $0.03 (23.4% lower).

Cost-first pickDeepSeek V4.1 Flash 1017 (batch)
Context-first pickDeepSeek V4.1 Flash 1017 (batch)
Sample savings$0.0323.4%
10x traffic gap$0.34

DeepSeek V4.1 Flash 1017 (batch) is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $0.34. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Cost winner changes by workload shape: input-heavy / RAG favors DeepSeek V4.1 Flash 1017 (batch), balanced workload favors Ternary Bonsai 2 9B, and output-heavy chatbot favors Ternary Bonsai 2 9B.

Workload shapeToken mixBetter pickDeepSeek V4.1 Flash 1017 (batch)Ternary Bonsai 2 9B
Input-heavy / RAG5M input + 500K outputDeepSeek V4.1 Flash 1017 (batch)$0.15$0.47
Balanced workload1M input + 1M outputTernary Bonsai 2 9B$0.21$0.21
Output-heavy chatbot1M input + 5M outputTernary Bonsai 2 9B$1.01$0.73
Cheaper input DeepSeek V4.1 Flash 1017 (batch) $0.011 vs $0.08 / 1M

DeepSeek V4.1 Flash 1017 (batch) is $0.07 cheaper per 1M input tokens (86.2% lower; 7.27x difference).

Cheaper output Ternary Bonsai 2 9B $0.2 vs $0.13 / 1M

Ternary Bonsai 2 9B is $0.07 cheaper per 1M output tokens (35% lower; 1.54x difference).

Larger context DeepSeek V4.1 Flash 1017 (batch) 1.05M vs 262.14K

DeepSeek V4.1 Flash 1017 (batch) has 786.43K more context (4x larger).

Sample workload DeepSeek V4.1 Flash 1017 (batch) $0.11 vs $0.15

DeepSeek V4.1 Flash 1017 (batch) is $0.03 cheaper on the standard workload (23.4% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
DeepSeek V4.1 Flash 1017 (batch) Calculating… Estimated API cost
Ternary Bonsai 2 9B Calculating… Estimated API cost
Cheaper for this workload Calculating… Difference: calculating…

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

Verdict

DeepSeek V4.1 Flash 1017 (batch) has the lower input price; Ternary Bonsai 2 9B has the lower output price; DeepSeek V4.1 Flash 1017 (batch) offers the larger context window. For the 1M input plus 500K output sample, DeepSeek V4.1 Flash 1017 (batch) is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0.11 for DeepSeek V4.1 Flash 1017 (batch) and $0.15 for Ternary Bonsai 2 9B.

Best Fit

Choose DeepSeek V4.1 Flash 1017 (batch) when you care most about lower input-token price, and larger context window.

Choose Ternary Bonsai 2 9B when you care most about lower output-token price.

Decision Notes
  • On the standard 1M input plus 500K output workload, DeepSeek V4.1 Flash 1017 (batch) is estimated at $0.11 vs $0.15 for Ternary Bonsai 2 9B, saving $0.03 (23.4% lower).
  • DeepSeek V4.1 Flash 1017 (batch) is $0.03 cheaper on the standard workload (23.4% lower).
  • DeepSeek V4.1 Flash 1017 (batch) is $0.07 cheaper per 1M input tokens (86.2% lower; 7.27x difference).
  • Ternary Bonsai 2 9B is $0.07 cheaper per 1M output tokens (35% lower; 1.54x difference).
  • DeepSeek V4.1 Flash 1017 (batch) has 786.43K more context (4x larger).
Head-to-Head Specs
FeatureNewDeepSeek V4.1 Flash 1017 (batch)
(DeepSeek)
Ternary Bonsai 2 9B
(PrismML)
Input Price
prompt tokens per 1M
$0.011$0.08
Completion Price
per 1M tokens
$0.2$0.13
Sample Workload Cost
1M input + 500K output
$0.11$0.15
Context Window1.05M262.14K
Release Date

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionDeepSeek V4.1 Flash 1017 (batch)On the standard 1M input plus 500K output workload, DeepSeek V4.1 Flash 1017 (batch) is estimated at $0.11 vs $0.15 for Ternary Bonsai 2 9B, saving $0.03 (23.4% lower).
High-volume input processingDeepSeek V4.1 Flash 1017 (batch)Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsTernary Bonsai 2 9BLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workDeepSeek V4.1 Flash 1017 (batch)A larger context window leaves more room for retrieved passages, conversation history, or source files.

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DeepSeek catalog

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PrismML catalog

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DeepSeek V4.1 Flash 1017 (batch)

DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the `deepseek-flash` API model name. V4.1 Flash is a sparse mixture-of-experts model...

Ternary Bonsai 2 9B

Ternary Bonsai 2 9B is PrismML’s compact, open-weight language model for conversational AI, reasoning, and tool use. Built on Qwen3.5, it uses ternary weights packed into 2 bits for efficient...