API cost decision in 10 seconds

NewLFM2.5-2.6B (free) vs DeepSeek V4 Flash Latest

Pick LFM2.5-2.6B (free) for lower cost; pick DeepSeek V4 Flash Latest only if the larger context window matters more.

Page updated: 2026-08-23T07:07:52Z Data confirmed: 2026-08-23T12:07:48Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick LFM2.5-2.6B (free) for lower cost; pick DeepSeek V4 Flash Latest only if the larger context window matters more.

On the standard 1M input plus 500K output workload, LFM2.5-2.6B (free) is estimated at $0 vs $0.11 for DeepSeek V4 Flash Latest, saving $0.11 (100% lower).

Cost-first pickLFM2.5-2.6B (free)

Context-first pickDeepSeek V4 Flash Latest

Sample savings$0.11100%

10x traffic gap$1.05

DeepSeek V4 Flash Latest has more context, but LFM2.5-2.6B (free) saves $0.11 on the standard workload. At 10x that traffic, the same price gap is about $1.05. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

LFM2.5-2.6B (free) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	LFM2.5-2.6B (free)	DeepSeek V4 Flash Latest
Input-heavy / RAG	5M input + 500K output	LFM2.5-2.6B (free)	$0	$0.27
Balanced workload	1M input + 1M output	LFM2.5-2.6B (free)	$0	$0.17
Output-heavy chatbot	1M input + 5M output	LFM2.5-2.6B (free)	$0	$0.69

Cheaper input LFM2.5-2.6B (free) $0 vs $0.04 / 1M

LFM2.5-2.6B (free) is free for input tokens while DeepSeek V4 Flash Latest costs $0.04 per 1M tokens.

Cheaper output LFM2.5-2.6B (free) $0 vs $0.13 / 1M

LFM2.5-2.6B (free) is free for output tokens while DeepSeek V4 Flash Latest costs $0.13 per 1M tokens.

Larger context DeepSeek V4 Flash Latest 65.54K vs 1.31M

DeepSeek V4 Flash Latest has 1.25M more context (20x larger).

Sample workload LFM2.5-2.6B (free) $0 vs $0.11

LFM2.5-2.6B (free) is free for the standard workload while the other model is estimated at $0.11.

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

LFM2.5-2.6B (free) Calculating… Estimated API cost

DeepSeek V4 Flash Latest 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

LFM2.5-2.6B (free) has the lower input price; LFM2.5-2.6B (free) has the lower output price; DeepSeek V4 Flash Latest offers the larger context window. For the 1M input plus 500K output sample, LFM2.5-2.6B (free) is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0 for LFM2.5-2.6B (free) and $0.11 for DeepSeek V4 Flash Latest.

Best Fit

Choose LFM2.5-2.6B (free) when you care most about lower input-token price, and lower output-token price.

Choose DeepSeek V4 Flash Latest when you care most about larger context window.

Decision Notes

On the standard 1M input plus 500K output workload, LFM2.5-2.6B (free) is estimated at $0 vs $0.11 for DeepSeek V4 Flash Latest, saving $0.11 (100% lower).
LFM2.5-2.6B (free) is free for the standard workload while the other model is estimated at $0.11.
LFM2.5-2.6B (free) is free for input tokens while DeepSeek V4 Flash Latest costs $0.04 per 1M tokens.
LFM2.5-2.6B (free) is free for output tokens while DeepSeek V4 Flash Latest costs $0.13 per 1M tokens.
DeepSeek V4 Flash Latest has 1.25M more context (20x larger).

Head-to-Head Specs

Feature	NewLFM2.5-2.6B (free) (LiquidAI)	DeepSeek V4 Flash Latest (deepseek)
Input Price prompt tokens per 1M	$0	$0.04
Completion Price per 1M tokens	$0	$0.13
Sample Workload Cost 1M input + 500K output	$0	$0.11
Context Window	65.54K	1.31M
Release Date	2026-08-11	2026-08-01

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	LFM2.5-2.6B (free)	On the standard 1M input plus 500K output workload, LFM2.5-2.6B (free) is estimated at $0 vs $0.11 for DeepSeek V4 Flash Latest, saving $0.11 (100% lower).
High-volume input processing	LFM2.5-2.6B (free)	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	LFM2.5-2.6B (free)	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	DeepSeek V4 Flash Latest	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

No lower-cost same-provider swap is currently tracked for this pair.

Larger context near this budget

No larger-context model is currently tracked within a close sample-cost band.

Popular competitors

DeepSeek V4 Flash 0731 · DeepSeek · #1
MiMo-V2.5 · Xiaomi · #2
Hy3 · Tencent · #3
Ox Alpha · stealth · #4

Cheaper alternatives

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Provider catalogs

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LiquidAI catalog

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deepseek catalog

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LFM2.5-2.6B (free)

LFM2.5-2.6B is a compact reasoning model from Liquid AI. It is suited for agent workflows, data extraction, RAG, and long-context processing. Liquid advises against using it for agentic coding or...

DeepSeek V4 Flash Latest

This model always redirects to the latest model in the DeepSeek V4 Flash family.