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

Grok 4.5 at a glance

Good enough on 28/52 tasks at the 90% bar. Best value on 0 tasks. Best fit for: Financial Analysis & Trading Decisions, Social & Promotional Content, Relevance, Classification & Matching.

Provider
xAI
Model name
grok-4.5
Cost mode:
Qualifies on
28 / 52 tasks (at 90% bar)
Best value on
0 tasks

Cost vs quality across all tasks

0%25%50%75%100%678910Quality score (6–10)Cost-efficiency vs best value (1.0 = best value)Onboarding Subject Analysis — quality 8.66, 9.1x the cost of the best-value good-enough optionTopic Sequence Ordering — quality 8.84, 4.8x the cost of the best-value good-enough optionStructured Output Extraction — quality 9.23, 73.1x the cost of the best-value good-enough optionX Post Relevance Scoring — quality 6.80, 7.0x the cost of the best-value good-enough optionActivity Feed Blurb Generation — quality 7.95, 51.6x the cost of the best-value good-enough optionSubstack Newsletter — quality 9.20, 35.8x the cost of the best-value good-enough optionInvestment Panel Voting — quality 8.79, 2.4x the cost of the best-value good-enough optionSocial Post Promotion — quality 8.05, 38.3x the cost of the best-value good-enough optionSocial Post Relevance Scoring — quality 7.21, 1.3x the cost of the best-value good-enough optionTrading Recommendation — quality 8.33, 1.8x the cost of the best-value good-enough optionSEC Filing Analysis — quality 8.83, 10.2x the cost of the best-value good-enough optionAuthor Living-Person Safety Check — quality 8.66, 43.3x the cost of the best-value good-enough optionLanguage Detection — quality 9.92, 89.5x the cost of the best-value good-enough optionExecutive Summary Generation — quality 7.92, 6.8x the cost of the best-value good-enough optionTopic Report Relevance Scoring — quality 8.65, 4.9x the cost of the best-value good-enough optionPublication Title Generation — quality 8.50, 38.0x the cost of the best-value good-enough optionLanding Page Section Generation — quality 9.34, 9.8x the cost of the best-value good-enough optionTopic Cluster Naming — quality 8.66, 10.1x the cost of the best-value good-enough optionTopic Grouping and Client Matching — quality 8.44, 13.6x the cost of the best-value good-enough optionEngagement Triage — quality 8.77, 46.5x the cost of the best-value good-enough optionOnboarding Chapter Outline Generation — quality 9.59, 13.0x the cost of the best-value good-enough optionX Post Selection — quality 8.32, 89.3x the cost of the best-value good-enough optionAuthor Voice Generation — quality 9.30, 15.9x the cost of the best-value good-enough optionAuthor Matching — quality 9.07, 5.2x the cost of the best-value good-enough optionSEC S-1 Chunk Analysis — quality 8.99, 9.5x the cost of the best-value good-enough optionImage Prompt Generation — quality 8.50, 19.3x the cost of the best-value good-enough optionReddit Post Generation — quality 8.25, 8.2x the cost of the best-value good-enough optionEngagement Reply Draft — quality 7.72, 17.3x 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
Social Post Relevance ScoringRelevance, Classification & Matching91%HIGH1.3x
Trading RecommendationFinancial Analysis & Trading Decisions96%RANKED1.8x
Investment Panel VotingFinancial Analysis & Trading Decisions97%RANKED2.4x
Topic Sequence OrderingTopic Organization & Clustering99%RANKED4.8x
Topic Report Relevance ScoringRelevance, Classification & Matching93%RANKED4.9x
Author Matching bestRelevance, Classification & Matching100%MEDIUM5.2x
Executive Summary GenerationContent Summarization & Synthesis100%RANKED6.8x
X Post Relevance ScoringRelevance, Classification & Matching92%MEDIUM7x
Reddit Post GenerationSocial & Promotional Content94%RANKED8.2x
Onboarding Subject AnalysisFinancial Analysis & Trading Decisions94%RANKED9.1x
SEC S-1 Chunk AnalysisFinancial Analysis & Trading Decisions98%RANKED9.5x
Landing Page Section GenerationLong-form Content Generation95%RANKED9.8x
Topic Cluster NamingTopic Organization & Clustering99%RANKED10x
SEC Filing AnalysisFinancial Analysis & Trading Decisions91%RANKED10x
Onboarding Chapter Outline GenerationLong-form Content Generation98%RANKED13x
Topic Grouping and Client MatchingRelevance, Classification & Matching98%RANKED14x
Author Voice GenerationLong-form Content Generation96%RANKED16x
Engagement Reply DraftSocial & Promotional Content92%HIGH17x
Image Prompt GenerationInfrastructure & Utility92%RANKED19x
Substack NewsletterLong-form Content Generation99%RANKED36x
Publication Title GenerationContent Summarization & Synthesis95%RANKED38x
Social Post PromotionSocial & Promotional Content91%RANKED38x
Author Living-Person Safety CheckRelevance, Classification & Matching93%RANKED43x
Engagement TriageRelevance, Classification & Matching98%RANKED46x
Activity Feed Blurb GenerationSocial & Promotional Content90%RANKED52x
Structured Output ExtractionStructured Data & Fact Extraction94%RANKED73x
X Post SelectionRelevance, Classification & Matching95%RANKED89x
Language DetectionRelevance, Classification & Matching99%RANKED89x

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.