The Right-Sized LLM Benchmark Cheapest LLM that's good enough.

GPT-5.4 Mini at a glance

Good enough on 6/52 tasks at the 90% bar. Best value on 1 task. Doesn't qualify on any: Financial Analysis & Trading Decisions, Structured Data & Fact Extraction, Content Summarization & Synthesis, Lo

Provider
OpenAI
Model name
gpt-5.4-mini
Cost mode:
Qualifies on
6 / 52 tasks (at 90% bar)
Best value on
1 tasks

Cost vs quality across all tasks

0%25%50%75%100%8910Quality score (8–10)Cost-efficiency vs best value (1.0 = best value)Activity Feed Blurb Generation — quality 8.64, 1.9x the cost of the best-value good-enough optionLanguage Detection — quality 9.91, 2.7x the cost of the best-value good-enough optionTopic Cluster Naming — quality 8.18, this model IS the best-value good-enough option★Engagement Triage — quality 8.26, 2.8x the cost of the best-value good-enough optionX Post Selection — quality 8.12, 2.1x the cost of the best-value good-enough optionImage Prompt Generation — quality 8.36, 7.2x the cost of the best-value good-enough option

within ~1.3× of the best-value model · 1.3–2× · >2× · ★ this model is the best-value pick on that task. Top-right = best quadrant. Only tasks where this model qualifies at the 90% bar are plotted.

Per-task breakdown

TaskCategoryQuality (% of best)ConfidenceOverpay
Topic Cluster Naming ★Topic Organization & Clustering94%MEDIUMbest value
Activity Feed Blurb GenerationSocial & Promotional Content98%RANKED1.9x
X Post SelectionRelevance, Classification & Matching93%MEDIUM2.1x
Language DetectionRelevance, Classification & Matching99%RANKED2.7x
Engagement TriageRelevance, Classification & Matching93%HIGH2.8x
Image Prompt GenerationInfrastructure & Utility91%RANKED7.2x

Overpay — how much more you pay by running this model instead of the best-value model that clears the quality bar on that task (marked ★). "16x" means you overpay 16× — the same output for 16× the best-value good-enough option; ★ means this model is that option (no overpayment). Confidence — how sure we are about the quality score (more judgments + more agreement = higher confidence): RANKED many independent judges scored this model's outputs and their agreement is very high (most confident) — HIGH many judges have scored it and they mostly agree (well-pinned) — MEDIUM enough judges have weighed in to publish, but they disagree more than we'd like (treat with a small grain of salt). LOW-confidence cells are hidden everywhere on the site. See the methodology for the exact thresholds.