API cost decision in 10 seconds

NewNex-N2.5-Mini (free) vs DeepSeek V4 Flash Vision Exp (batch)

Pick Nex-N2.5-Mini (free) for lower cost; pick DeepSeek V4 Flash Vision Exp (batch) only if the larger context window matters more.

Page updated: 2026-09-08T19:08:22Z Data confirmed: 2026-09-08T19:08:22Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Nex-N2.5-Mini (free) for lower cost; pick DeepSeek V4 Flash Vision Exp (batch) only if the larger context window matters more.

On the standard 1M input plus 500K output workload, Nex-N2.5-Mini (free) is estimated at $0 vs $0.28 for DeepSeek V4 Flash Vision Exp (batch), saving $0.28 (100% lower).

Cost-first pickNex-N2.5-Mini (free)

Context-first pickDeepSeek V4 Flash Vision Exp (batch)

Sample savings$0.28100%

10x traffic gap$2.75

DeepSeek V4 Flash Vision Exp (batch) has more context, but Nex-N2.5-Mini (free) saves $0.28 on the standard workload. At 10x that traffic, the same price gap is about $2.75. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

Nex-N2.5-Mini (free) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Nex-N2.5-Mini (free)	DeepSeek V4 Flash Vision Exp (batch)
Input-heavy / RAG	5M input + 500K output	Nex-N2.5-Mini (free)	$0	$0.72
Balanced workload	1M input + 1M output	Nex-N2.5-Mini (free)	$0	$0.44
Output-heavy chatbot	1M input + 5M output	Nex-N2.5-Mini (free)	$0	$1.76

Cheaper input Nex-N2.5-Mini (free) $0 vs $0.11 / 1M

Nex-N2.5-Mini (free) is free for input tokens while DeepSeek V4 Flash Vision Exp (batch) costs $0.11 per 1M tokens.

Cheaper output Nex-N2.5-Mini (free) $0 vs $0.33 / 1M

Nex-N2.5-Mini (free) is free for output tokens while DeepSeek V4 Flash Vision Exp (batch) costs $0.33 per 1M tokens.

Larger context DeepSeek V4 Flash Vision Exp (batch) 262.14K vs 1.05M

DeepSeek V4 Flash Vision Exp (batch) has 786.43K more context (4x larger).

Sample workload Nex-N2.5-Mini (free) $0 vs $0.28

Nex-N2.5-Mini (free) is free for the standard workload while the other model is estimated at $0.28.

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Nex-N2.5-Mini (free) Calculating… Estimated API cost

DeepSeek V4 Flash Vision Exp (batch) 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

Nex-N2.5-Mini (free) has the lower input price; Nex-N2.5-Mini (free) has the lower output price; DeepSeek V4 Flash Vision Exp (batch) offers the larger context window. For the 1M input plus 500K output sample, Nex-N2.5-Mini (free) is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0 for Nex-N2.5-Mini (free) and $0.28 for DeepSeek V4 Flash Vision Exp (batch).

Best Fit

Choose Nex-N2.5-Mini (free) when you care most about lower input-token price, and lower output-token price.

Choose DeepSeek V4 Flash Vision Exp (batch) when you care most about larger context window.

Decision Notes

On the standard 1M input plus 500K output workload, Nex-N2.5-Mini (free) is estimated at $0 vs $0.28 for DeepSeek V4 Flash Vision Exp (batch), saving $0.28 (100% lower).
Nex-N2.5-Mini (free) is free for the standard workload while the other model is estimated at $0.28.
Nex-N2.5-Mini (free) is free for input tokens while DeepSeek V4 Flash Vision Exp (batch) costs $0.11 per 1M tokens.
Nex-N2.5-Mini (free) is free for output tokens while DeepSeek V4 Flash Vision Exp (batch) costs $0.33 per 1M tokens.
DeepSeek V4 Flash Vision Exp (batch) has 786.43K more context (4x larger).

Head-to-Head Specs

Feature	NewNex-N2.5-Mini (free) (Nex AGI)	DeepSeek V4 Flash Vision Exp (batch) (DeepSeek)
Input Price prompt tokens per 1M	$0	$0.11
Completion Price per 1M tokens	$0	$0.33
Sample Workload Cost 1M input + 500K output	$0	$0.28
Context Window	262.14K	1.05M
Release Date	2026-09-08	2026-08-21

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Nex-N2.5-Mini (free)	On the standard 1M input plus 500K output workload, Nex-N2.5-Mini (free) is estimated at $0 vs $0.28 for DeepSeek V4 Flash Vision Exp (batch), saving $0.28 (100% lower).
High-volume input processing	Nex-N2.5-Mini (free)	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Nex-N2.5-Mini (free)	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	DeepSeek V4 Flash Vision Exp (batch)	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

DeepSeek V4 Flash (free) can replace DeepSeek V4 Flash Vision Exp (batch) when lower sample workload cost matters most: $0.
DeepSeek V4 Flash 0731 can replace DeepSeek V4 Flash Vision Exp (batch) when lower sample workload cost matters most: $0.15.
DeepSeek V4 Flash 0423 can replace DeepSeek V4 Flash Vision Exp (batch) when lower sample workload cost matters most: $0.17.

Larger context near this budget

DeepSeek V4 Flash 0731 offers 1.31M context with $0.15 sample workload cost.
GLM 5.3 Flash offers 1.31M context with $0.2 sample workload cost.
GLM Flash Latest offers 1.31M context with $0.2 sample workload cost.
DeepSeek V4 Flash Latest offers 1.31M context with $0.13 sample workload cost.

Popular competitors

Hy4 preview · Tencent · #1
GPT-5.6 Luna · OpenAI · #2
DeepSeek V4 Flash 0731 · DeepSeek · #3
GLM 5.3 Flash · Z.ai · #4

Cheaper alternatives

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Larger context alternatives

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Provider catalogs

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Nex AGI catalog

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DeepSeek catalog

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Nex-N2.5-Mini (free)

Nex-N2.5 is an agentic model built to turn goals into working, verified outcomes. Its core strength is agentic coding within a visual feedback loop: it can explore codebases, implement multi-file...

DeepSeek V4 Flash Vision Exp (batch)

DeepSeek V4 Flash Vision Exp is an experimental vision-enabled version of [DeepSeek V4 Flash 0731](https://openrouter.ai/deepseek/deepseek-v4-flash-0731) from DeepSeek, adding image understanding while matching the base model on text capabilities including agents,...