API cost decision in 10 seconds

Llama 3.1 8B Instruct vs Ministral 3 3B 2512

Pick Llama 3.1 8B Instruct when budget is the priority.

Page updated: 2026-05-26T15:08:08Z Data confirmed: 2026-05-26T18:08:02Z Prices normalized to USD per 1M tokens Sample workload: 1M input + 500K output

Budget verdict

Pick Llama 3.1 8B Instruct when budget is the priority.

On the standard 1M input plus 500K output workload, Llama 3.1 8B Instruct is estimated at $0.04 vs $0.15 for Ministral 3 3B 2512, saving $0.11 (70% lower).

Cost-first pickLlama 3.1 8B Instruct

Context-first pickBoth models

Sample savings$0.1170%

10x traffic gap$1.05

The reported context window is tied, so cost and provider fit carry more weight. 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.

Llama 3.1 8B Instruct stays cheaper across input-heavy, balanced, and output-heavy sample workloads.

Workload shape	Token mix	Better pick	Llama 3.1 8B Instruct	Ministral 3 3B 2512
Input-heavy / RAG	5M input + 500K output	Llama 3.1 8B Instruct	$0.12	$0.55
Balanced workload	1M input + 1M output	Llama 3.1 8B Instruct	$0.07	$0.2
Output-heavy chatbot	1M input + 5M output	Llama 3.1 8B Instruct	$0.27	$0.6

Cheaper input Llama 3.1 8B Instruct $0.02 vs $0.1 / 1M

Llama 3.1 8B Instruct is $0.08 cheaper per 1M input tokens (80% lower; 5x difference).

Cheaper output Llama 3.1 8B Instruct $0.05 vs $0.1 / 1M

Llama 3.1 8B Instruct is $0.05 cheaper per 1M output tokens (50% lower; 2x difference).

Larger context Tie 131.07K vs 131.07K

Both models report the same context window at 131.07K tokens.

Sample workload Llama 3.1 8B Instruct $0.04 vs $0.15

Llama 3.1 8B Instruct is $0.11 cheaper on the standard workload (70% lower).

Estimate your workload cost

Your Workload Cost

Prices are normalized to USD per 1M tokens.

Monthly input tokens Monthly output tokens

Llama 3.1 8B Instruct Calculating… Estimated API cost

Ministral 3 3B 2512 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

Llama 3.1 8B Instruct has the lower input price; Llama 3.1 8B Instruct has the lower output price; both models report the same context window. For the 1M input plus 500K output sample, Llama 3.1 8B Instruct is cheaper for the standard workload.

For a 1M input token plus 500K output token workload, the estimated API cost is $0.04 for Llama 3.1 8B Instruct and $0.15 for Ministral 3 3B 2512.

Best Fit

Choose Llama 3.1 8B Instruct when you care most about lower input-token price, and lower output-token price.

Choose Ministral 3 3B 2512 when its provider, model quality, latency, or availability is more important than the numeric price/context winner.

Decision Notes

On the standard 1M input plus 500K output workload, Llama 3.1 8B Instruct is estimated at $0.04 vs $0.15 for Ministral 3 3B 2512, saving $0.11 (70% lower).
Llama 3.1 8B Instruct is $0.11 cheaper on the standard workload (70% lower).
Llama 3.1 8B Instruct is $0.08 cheaper per 1M input tokens (80% lower; 5x difference).
Llama 3.1 8B Instruct is $0.05 cheaper per 1M output tokens (50% lower; 2x difference).
Both models report the same context window at 131.07K tokens.

Head-to-Head Specs

Feature	Llama 3.1 8B Instruct (Meta)	Ministral 3 3B 2512 (Mistral)
Input Price prompt tokens per 1M	$0.02	$0.1
Completion Price per 1M tokens	$0.05	$0.1
Sample Workload Cost 1M input + 500K output	$0.04	$0.15
Context Window	131.07K	131.07K
Release Date	2024-07-23	2025-12-02
Popularity	#40	#130

Use-Case Decision Matrix

Use case	Better pick	Why
Budget-constrained production	Llama 3.1 8B Instruct	On the standard 1M input plus 500K output workload, Llama 3.1 8B Instruct is estimated at $0.04 vs $0.15 for Ministral 3 3B 2512, saving $0.11 (70% lower).
High-volume input processing	Llama 3.1 8B Instruct	Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill.
Long responses and chatbots	Llama 3.1 8B Instruct	Lower output-token price matters most when assistants generate many completion tokens.
RAG or long-document work	Tie	A larger context window leaves more room for retrieved passages, conversation history, or source files.

Related Alternatives

Same-provider lower-cost swaps

Llama 3.3 70B Instruct (free) can replace Llama 3.1 8B Instruct when lower sample workload cost matters most: $0.
Llama 3.2 3B Instruct (free) can replace Llama 3.1 8B Instruct when lower sample workload cost matters most: $0.
Mistral Nemo can replace Ministral 3 3B 2512 when lower sample workload cost matters most: $0.04.
Mistral Small 3 can replace Ministral 3 3B 2512 when lower sample workload cost matters most: $0.09.

Larger context near this budget

Owl Alpha offers 1.05M context with $0 sample workload cost.
DeepSeek V4 Flash (free) offers 1.05M context with $0 sample workload cost.
Lyria 3 Clip Preview offers 1.05M context with $0 sample workload cost.
Lyria 3 Pro Preview offers 1.05M context with $0 sample workload cost.

Popular competitors

DeepSeek V4 Flash · DeepSeek · #1
Hy3 preview · Tencent · #2
Claude Opus 4.7 · Anthropic · #3
Claude Sonnet 4.6 · Anthropic · #4

Cheaper alternatives

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Provider catalogs

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Meta catalog

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Mistral catalog

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Llama 3.1 8B Instruct

Meta's latest class of model (Llama 3.1) launched with a variety of sizes & flavors. This 8B instruct-tuned version is fast and efficient. It has demonstrated strong performance compared to...

Ministral 3 3B 2512

The smallest model in the Ministral 3 family, Ministral 3 3B is a powerful, efficient tiny language model with vision capabilities.