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

GPT-5.4 Nano at a glance

Good enough on 9/52 tasks at the 90% bar. Best value on 1 task. Doesn't qualify on any: Social & Promotional Content, Topic Organization & Clustering.

Provider
OpenAI
Model name
gpt-5.4-nano
Cost mode:
Qualifies on
9 / 52 tasks (at 90% bar)
Best value on
1 tasks

Cost vs quality across all tasks

0%25%50%75%100%78910Quality score (7–10)Cost-efficiency vs best value (1.0 = best value)Report Executive Summary Generation — quality 7.84, this model IS the best-value good-enough option★Catalyst And Scenario Analysis — quality 7.94, 1.1x the cost of the best-value good-enough optionEngagement Opportunity Triage — quality 8.45, 1.5x the cost of the best-value good-enough optionLanguage Identification — quality 9.93, 1.1x the cost of the best-value good-enough optionVoice Profile Generation — quality 8.91, 4.6x the cost of the best-value good-enough optionProfiled Document Section Analysis — quality 8.23, 4.6x the cost of the best-value good-enough optionStructured Content Summarization — quality 9.24, 1.1x the cost of the best-value good-enough optionStructured Output Extraction — quality 9.46, 4.6x the cost of the best-value good-enough optionSection Prompt Generation — quality 8.07, 3.1x 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
Report Executive Summary Generation ★Content Summarization & Synthesis90%HIGHbest value
Structured Content Summarization bestContent Summarization & Synthesis100%RANKED1.1x
Catalyst And Scenario AnalysisFinancial Analysis & Trading Decisions90%HIGH1.1x
Language IdentificationRelevance, Classification & Matching99%RANKED1.1x
Engagement Opportunity TriageRelevance, Classification & Matching95%RANKED1.5x
Section Prompt GenerationInfrastructure & Utility94%HIGH3.1x
Voice Profile GenerationLong-form Content Generation90%RANKED4.6x
Profiled Document Section AnalysisFinancial Analysis & Trading Decisions90%HIGH4.6x
Structured Output ExtractionStructured Data & Fact Extraction97%HIGH4.6x

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.