Fronset Benchmark

Claude Sonnet 5.5 at a glance

Good enough on 26/54 tasks at the Balanced step. Best value on 0 tasks. Best fit for: Infrastructure & Utility, Long-form Content Generation, Social & Promotional Content, Content Summarization & Synt

Provider
Anthropic
Model name
claude-sonnet-5-5
What the steps mean
Cost mode:
Qualifies on
26 / 54 tasks (at the Balanced step)
Best value on
0 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)Research Query Generation — quality 7.17, 16.9x the cost of the best-value good-enough optionMulti Perspective Decision Synthesis — quality 8.33, 12.2x the cost of the best-value good-enough optionMetadata Paragraph Rewriting — quality 7.84, 22.4x the cost of the best-value good-enough optionBench Hypothesis Post Generation — quality 8.76, 12.1x the cost of the best-value good-enough optionCapability Category Matching — quality 8.88, 35.0x the cost of the best-value good-enough optionPromotional Campaign Generation — quality 7.82, 17.3x the cost of the best-value good-enough optionEngagement Opportunity Triage — quality 8.49, 34.1x the cost of the best-value good-enough optionPublic Response Generation — quality 7.92, 31.6x the cost of the best-value good-enough optionTopic Cluster Labeling — quality 8.55, 81.7x the cost of the best-value good-enough optionSocial Post Portfolio Selection — quality 8.58, 14.7x the cost of the best-value good-enough optionProfile Pool Matching — quality 8.42, 34.8x the cost of the best-value good-enough optionContent To Image Prompt Generation — quality 8.80, 31.2x the cost of the best-value good-enough optionVoice Profile Generation — quality 8.98, 15.0x the cost of the best-value good-enough optionEvidence Grounded Claim Generation — quality 8.20, 14.0x the cost of the best-value good-enough optionVisual Theme Configuration Generation — quality 8.33, 26.1x the cost of the best-value good-enough optionStructured Content Summarization — quality 8.02, 14.7x the cost of the best-value good-enough optionClaim Continuity Classification — quality 8.69, 15.8x the cost of the best-value good-enough optionReport Executive Summary Generation — quality 8.11, 18.6x the cost of the best-value good-enough optionProfiled Document Analysis — quality 8.50, 22.0x the cost of the best-value good-enough optionLanguage Identification — quality 10.00, 39.8x the cost of the best-value good-enough optionCommunity Content Promotion Generation — quality 7.98, 1.4x the cost of the best-value good-enough optionPromotional Message Generation — quality 8.68, 14.4x the cost of the best-value good-enough optionBatch Text Translation — quality 9.02, 17.4x the cost of the best-value good-enough optionReference Preserving Analytical Writing — quality 8.67, 5.7x the cost of the best-value good-enough optionResearch Community Selection — quality 7.07, 5.7x the cost of the best-value good-enough optionStructured Output Extraction — quality 9.88, 45.8x 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 Balanced step are plotted.

Per-task breakdown

TaskCategoryQuality (% of best)ConfidenceOverpay
Community Content Promotion GenerationSocial & Promotional Content91%MEDIUM1.4x
Reference Preserving Analytical WritingLong-form Content Generation93%MEDIUM5.7x
Research Community SelectionRelevance, Classification & Matching90%MEDIUM5.7x
Bench Hypothesis Post GenerationSocial & Promotional Content99%RANKED12x
Multi Perspective Decision SynthesisFinancial Analysis & Trading Decisions94%MEDIUM12x
Evidence Grounded Claim GenerationContent Summarization & Synthesis96%HIGH14x
Promotional Message GenerationSocial & Promotional Content100%HIGH14x
Structured Content SummarizationContent Summarization & Synthesis90%MEDIUM15x
Social Post Portfolio SelectionRelevance, Classification & Matching98%HIGH15x
Voice Profile GenerationLong-form Content Generation94%HIGH15x
Claim Continuity Classification bestRelevance, Classification & Matching100%HIGH16x
Research Query GenerationInfrastructure & Utility91%MEDIUM17x
Promotional Campaign GenerationSocial & Promotional Content97%MEDIUM17x
Batch Text TranslationInfrastructure & Utility98%HIGH17x
Report Executive Summary GenerationContent Summarization & Synthesis94%HIGH19x
Profiled Document AnalysisFinancial Analysis & Trading Decisions93%MEDIUM22x
Metadata Paragraph RewritingInfrastructure & Utility94%RANKED22x
Visual Theme Configuration GenerationLong-form Content Generation94%HIGH26x
Content To Image Prompt GenerationInfrastructure & Utility99%RANKED31x
Public Response GenerationSocial & Promotional Content93%MEDIUM32x
Engagement Opportunity TriageRelevance, Classification & Matching96%HIGH34x
Profile Pool MatchingRelevance, Classification & Matching97%MEDIUM35x
Capability Category MatchingRelevance, Classification & Matching100%MEDIUM35x
Language Identification bestRelevance, Classification & Matching100%RANKED40x
Structured Output ExtractionStructured Data & Fact Extraction99%RANKED46x
Topic Cluster LabelingTopic Organization & Clustering96%HIGH82x

Overpay — how much more you pay by running this model instead of the best-value model that meets the quality step 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.