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

Meta Muse Spark 1.3 at a glance

Good enough on 21/52 tasks at the 90% bar. Best value on 0 tasks. Best fit for: Infrastructure & Utility, Long-form Content Generation, Relevance, Classification & Matching.

Provider
OpenRouter
Model name
meta/muse-spark-1.3
Cost mode:
Qualifies on
21 / 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)Short Post Batch Relevance Scoring — quality 6.88, 18.7x the cost of the best-value good-enough optionReference Preserving Analytical Writing — quality 8.84, 32.8x the cost of the best-value good-enough optionShort Promotional Teaser Generation — quality 8.08, 31.9x the cost of the best-value good-enough optionMulti Perspective Decision Synthesis — quality 8.13, 16.6x the cost of the best-value good-enough optionResearch Query Validation — quality 8.75, 19.0x the cost of the best-value good-enough optionPublication Title Package Generation — quality 8.63, 3.1x the cost of the best-value good-enough optionProfile Pool Matching — quality 8.53, 6.6x the cost of the best-value good-enough optionLanguage Identification — quality 9.86, 53.6x the cost of the best-value good-enough optionSocial Post Portfolio Selection — quality 8.73, 57.7x the cost of the best-value good-enough optionVoice Profile Generation — quality 9.66, 13.2x the cost of the best-value good-enough optionAuthoritative Source Selection — quality 8.24, 17.7x the cost of the best-value good-enough optionFactual Claim Refinement — quality 8.44, 37.5x the cost of the best-value good-enough optionBatch Text Translation — quality 9.00, 20.1x the cost of the best-value good-enough optionTopic Taxonomy Matching — quality 8.25, 24.1x the cost of the best-value good-enough optionProfiled Document Section Analysis — quality 8.70, 26.1x the cost of the best-value good-enough optionPromotional Message Generation — quality 8.07, 16.4x the cost of the best-value good-enough optionStructured Content Summarization — quality 9.06, 6.5x the cost of the best-value good-enough optionTopic Cluster Labeling — quality 8.11, 11.5x the cost of the best-value good-enough optionModel Specific Prompt Adaptation — quality 8.80, 14.4x the cost of the best-value good-enough optionResearch Query Generation — quality 7.62, 24.6x the cost of the best-value good-enough optionPersona Policy Eligibility Check — quality 8.97, 26.0x 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
Publication Title Package GenerationContent Summarization & Synthesis94%RANKED3.1x
Structured Content SummarizationContent Summarization & Synthesis98%RANKED6.5x
Profile Pool MatchingRelevance, Classification & Matching97%MEDIUM6.6x
Topic Cluster LabelingTopic Organization & Clustering91%MEDIUM11x
Voice Profile GenerationLong-form Content Generation98%HIGH13x
Model Specific Prompt Adaptation bestInfrastructure & Utility100%MEDIUM14x
Promotional Message GenerationSocial & Promotional Content93%MEDIUM16x
Multi Perspective Decision SynthesisFinancial Analysis & Trading Decisions92%RANKED17x
Authoritative Source SelectionRelevance, Classification & Matching94%RANKED18x
Short Post Batch Relevance ScoringRelevance, Classification & Matching91%MEDIUM19x
Research Query ValidationInfrastructure & Utility100%MEDIUM19x
Batch Text TranslationInfrastructure & Utility96%RANKED20x
Topic Taxonomy MatchingRelevance, Classification & Matching98%MEDIUM24x
Research Query GenerationInfrastructure & Utility94%HIGH25x
Persona Policy Eligibility CheckRelevance, Classification & Matching97%HIGH26x
Profiled Document Section AnalysisFinancial Analysis & Trading Decisions95%HIGH26x
Short Promotional Teaser GenerationSocial & Promotional Content92%MEDIUM32x
Reference Preserving Analytical WritingLong-form Content Generation96%MEDIUM33x
Factual Claim RefinementInfrastructure & Utility98%MEDIUM38x
Language IdentificationRelevance, Classification & Matching98%HIGH54x
Social Post Portfolio SelectionRelevance, Classification & Matching100%RANKED58x

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.