API cost decision in 10 seconds

Claude Sonnet 4 vs LFM2-24B-A2B

Pick LFM2-24B-A2B for lower cost; pick Claude Sonnet 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 LFM2-24B-A2B for lower cost; pick Claude Sonnet 4 only if the larger context window matters more.

On the standard 1M input plus 500K output workload, LFM2-24B-A2B is estimated at $0.09 vs $10.5 for Claude Sonnet 4, saving $10.41 (99.1% lower).

Cost-first pickLFM2-24B-A2B
Context-first pickClaude Sonnet 4
Sample savings$10.4199.1%
10x traffic gap$104.1

Claude Sonnet 4 has more context, but LFM2-24B-A2B saves $10.41 on the standard workload. At 10x that traffic, the same price gap is about $104.1. Use the calculator below to replace the sample workload with your own token volume.

Cost sensitivity

Workload Sensitivity

Same prices, different token mixes.

LFM2-24B-A2B stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shapeToken mixBetter pickClaude Sonnet 4LFM2-24B-A2B
Input-heavy / RAG5M input + 500K outputLFM2-24B-A2B$22.5$0.21
Balanced workload1M input + 1M outputLFM2-24B-A2B$18$0.15
Output-heavy chatbot1M input + 5M outputLFM2-24B-A2B$78$0.63
Cheaper input LFM2-24B-A2B $3 vs $0.03 / 1M

LFM2-24B-A2B is $2.97 cheaper per 1M input tokens (99% lower; 100x difference).

Cheaper output LFM2-24B-A2B $15 vs $0.12 / 1M

LFM2-24B-A2B is $14.88 cheaper per 1M output tokens (99.2% lower; 125x difference).

Larger context Claude Sonnet 4 1M vs 128K

Claude Sonnet 4 has 872K more context (7.81x larger).

Sample workload LFM2-24B-A2B $10.5 vs $0.09

LFM2-24B-A2B is $10.41 cheaper on the standard workload (99.1% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.
Claude Sonnet 4 Calculating… Estimated API cost
LFM2-24B-A2B 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

LFM2-24B-A2B has the lower input price; LFM2-24B-A2B has the lower output price; Claude Sonnet 4 offers the larger context window. For the 1M input plus 500K output sample, LFM2-24B-A2B is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $10.5 for Claude Sonnet 4 and $0.09 for LFM2-24B-A2B.

Best Fit

Choose Claude Sonnet 4 when you care most about larger context window.

Choose LFM2-24B-A2B 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, LFM2-24B-A2B is estimated at $0.09 vs $10.5 for Claude Sonnet 4, saving $10.41 (99.1% lower).
  • LFM2-24B-A2B is $10.41 cheaper on the standard workload (99.1% lower).
  • LFM2-24B-A2B is $2.97 cheaper per 1M input tokens (99% lower; 100x difference).
  • LFM2-24B-A2B is $14.88 cheaper per 1M output tokens (99.2% lower; 125x difference).
  • Claude Sonnet 4 has 872K more context (7.81x larger).
Head-to-Head Specs
FeatureClaude Sonnet 4
(Anthropic)		LFM2-24B-A2B
(LiquidAI)
Input Price
prompt tokens per 1M		$3$0.03
Completion Price
per 1M tokens		$15$0.12
Sample Workload Cost
1M input + 500K output		$10.5$0.09
Context Window1M128K
Release Date
Popularity#60#125

Use-Case Decision Matrix

Use caseBetter pickWhy
Budget-constrained productionLFM2-24B-A2BOn the standard 1M input plus 500K output workload, LFM2-24B-A2B is estimated at $0.09 vs $10.5 for Claude Sonnet 4, saving $10.41 (99.1% lower).
High-volume input processingLFM2-24B-A2BLower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbotsLFM2-24B-A2BLower output-token price matters most when assistants generate many completion tokens.
RAG or long-document workClaude Sonnet 4A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps
  • Claude 3 Haiku can replace Claude Sonnet 4 when lower sample workload cost matters most: $0.88.
  • Claude 3.5 Haiku can replace Claude Sonnet 4 when lower sample workload cost matters most: $2.8.
  • Anthropic Claude Haiku Latest can replace Claude Sonnet 4 when lower sample workload cost matters most: $3.5.
  • Claude Haiku 4.5 can replace Claude Sonnet 4 when lower sample workload cost matters most: $3.5.
Larger context near this budget
  • Llama 4 Scout offers 10M context with $0.23 sample workload cost.
  • Grok 4.20 offers 2M context with $2.5 sample workload cost.
  • Grok 4.20 Multi-Agent offers 2M context with $5 sample workload cost.
  • GPT-5.4 offers 1.05M context with $10 sample workload cost.

Cheaper alternatives

Review low-cost models sorted by a standard 1M input plus 500K output workload.

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Larger context alternatives

Find models with larger context windows for RAG, long documents, and codebase review.

Open largest context models

Provider catalogs

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Anthropic catalog

Review all tracked Anthropic models before deciding whether this matchup is the right shortlist.

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LiquidAI catalog

Check other LiquidAI models with comparable pricing, context, or release timing.

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Claude Sonnet 4

Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability. Achieving state-of-the-art performance on SWE-bench (72.7%),...

LFM2-24B-A2B

LFM2-24B-A2B is the largest model in the LFM2 family of hybrid architectures designed for efficient on-device deployment. Built as a 24B parameter Mixture-of-Experts model with only 2B active parameters per...