API cost decision in 10 seconds

🔥GPT-5.4 vs DeepSeek V3.1 Nex N1

Pick DeepSeek V3.1 Nex N1 for lower cost; pick GPT-5.4 only if the larger context window matters more.

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

Budget verdict

Pick DeepSeek V3.1 Nex N1 for lower cost; pick GPT-5.4 only if the larger context window matters more.

On the standard 1M input plus 500K output workload, DeepSeek V3.1 Nex N1 is estimated at $0.39 vs $10 for GPT-5.4, saving $9.62 (96.2% lower).

Cost-first pickDeepSeek V3.1 Nex N1
Context-first pickGPT-5.4
Sample savings$9.6296.2%
10x traffic gap$96.15

GPT-5.4 has more context, but DeepSeek V3.1 Nex N1 saves $9.62 on the standard workload. At 10x that traffic, the same price gap is about $96.15. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

DeepSeek V3.1 Nex N1 stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickGPT-5.4DeepSeek V3.1 Nex N1
Input-heavy / RAG5M input + 500K outputDeepSeek V3.1 Nex N1$20$0.93
Balanced workload1M input + 1M outputDeepSeek V3.1 Nex N1$17.5$0.64
Output-heavy chatbot1M input + 5M outputDeepSeek V3.1 Nex N1$77.5$2.63
Cheaper input DeepSeek V3.1 Nex N1 $2.5 vs $0.135 / 1M

DeepSeek V3.1 Nex N1 is $2.37 cheaper per 1M input tokens (94.6% lower; 18.5x difference).

Cheaper output DeepSeek V3.1 Nex N1 $15 vs $0.5 / 1M

DeepSeek V3.1 Nex N1 is $14.5 cheaper per 1M output tokens (96.7% lower; 30x difference).

Larger context GPT-5.4 1.05M vs 131.07K

GPT-5.4 has 918.93K more context (8.01x larger).

Sample workload DeepSeek V3.1 Nex N1 $10 vs $0.39

DeepSeek V3.1 Nex N1 is $9.62 cheaper on the standard workload (96.2% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
GPT-5.4 Calculating… Estimated API cost
DeepSeek V3.1 Nex N1 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 V3.1 Nex N1 has the lower input price; DeepSeek V3.1 Nex N1 has the lower output price; GPT-5.4 offers the larger context window. For the 1M input plus 500K output sample, DeepSeek V3.1 Nex N1 is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $10 for GPT-5.4 and $0.39 for DeepSeek V3.1 Nex N1.

Best Fit

Choose GPT-5.4 when you care most about larger context window.

Choose DeepSeek V3.1 Nex N1 when you care most about lower input-token price, and lower output-token price.

Decision Notes
  • On the standard 1M input plus 500K output workload, DeepSeek V3.1 Nex N1 is estimated at $0.39 vs $10 for GPT-5.4, saving $9.62 (96.2% lower).
  • DeepSeek V3.1 Nex N1 is $9.62 cheaper on the standard workload (96.2% lower).
  • DeepSeek V3.1 Nex N1 is $2.37 cheaper per 1M input tokens (94.6% lower; 18.5x difference).
  • DeepSeek V3.1 Nex N1 is $14.5 cheaper per 1M output tokens (96.7% lower; 30x difference).
  • GPT-5.4 has 918.93K more context (8.01x larger).
Head-to-Head Specs
Feature🔥GPT-5.4
(OpenAI)
DeepSeek V3.1 Nex N1
(Nex AGI)
Input Price
prompt tokens per 1M
$2.5$0.135
Completion Price
per 1M tokens
$15$0.5
Sample Workload Cost
1M input + 500K output
$10$0.39
Context Window1.05M131.07K
Release Date
Popularity#19

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionDeepSeek V3.1 Nex N1On the standard 1M input plus 500K output workload, DeepSeek V3.1 Nex N1 is estimated at $0.39 vs $10 for GPT-5.4, saving $9.62 (96.2% lower).
High-volume input processingDeepSeek V3.1 Nex N1Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsDeepSeek V3.1 Nex N1Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workGPT-5.4A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • gpt-oss-120b (free) can replace GPT-5.4 when lower sample workload cost matters most: $0.
  • gpt-oss-20b (free) can replace GPT-5.4 when lower sample workload cost matters most: $0.
  • gpt-oss-20b can replace GPT-5.4 when lower sample workload cost matters most: $0.1.
  • gpt-oss-120b can replace GPT-5.4 when lower sample workload cost matters most: $0.13.
Larger context near this budget

Cheaper alternatives

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Larger context alternatives

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Provider catalogs

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OpenAI catalog

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Nex AGI catalog

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GPT-5.4

GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...

DeepSeek V3.1 Nex N1

DeepSeek V3.1 Nex-N1 is the flagship release of the Nex-N1 series — a post-trained model designed to highlight agent autonomy, tool use, and real-world productivity. Nex-N1 demonstrates competitive performance across...