Inference Index
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Llama 4 Scout vs GPT-5 Mini

Meta vs OpenAI. Specs, benchmarks, and real per-task cost — all in one page.

Verdict

GPT-5 Mini leads on LMSYS ELO (1288 vs 1265). Llama 4 Scout is ~1.9× cheaper on a 3:1 input:output blend. Llama 4 Scout is open-weights, the other is proprietary.

Meta
Llama 4 Scout

The 70B workhorse open-weight. Fits on a single H100, beloved by self-hosters.

Single-GPU deployableDirt cheap on aggregatorsStrong fine-tuning base
OpenAI
GPT-5 Mini

GPT-5’s smaller, cheaper sibling. Optimized for chat and lightweight agent tasks.

Very low latencyCheap enough for mass consumer apps
Pricing
Input / 1M$0.35$0.50
Output / 1M$0.80$2.00
Context128K256K
Max output8K16K
LicenseOpen weightsProprietary
Released2025-12-102026-01-21
Benchmarks
LMSYS ELO1265.01288.0
MMLU Pro77.278.5
HumanEval82.485.5
MATH72.579.8
IFEval84.185.4
Per-task cost
Summarize a 1-hour meeting transcript$0.0057$0.0085
Review a 500-line pull request$0.0044$0.0080
Answer a customer support ticket$0.0017$0.0031
Extract structured data from a resume$0.0026$0.0045
Debug a stack trace with context$0.0037$0.0070

Per-call cost using published token counts for each task. Real-world prompts vary.