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

DeepSeek V4 Flash at a glance

Good enough on 18/52 tasks at the 90% bar. Best value on 14 tasks. Best fit for: Structured Data & Fact Extraction, Infrastructure & Utility. Doesn't qualify on any: Financial Analysis & Trading Decis

Provider
DeepSeek
Model name
deepseek-v4-flash
Cost mode:
Qualifies on
18 / 52 tasks (at 90% bar)
Best value on
14 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)Structured Output Extraction — quality 9.54, this model IS the best-value good-enough option★Activity Feed Blurb Generation — quality 8.38, this model IS the best-value good-enough option★Social Post Promotion — quality 8.02, this model IS the best-value good-enough option★Onboarding Chapter Prompt Adaptation — quality 8.27, this model IS the best-value good-enough option★S-1 TOC Extraction — quality 8.58, this model IS the best-value good-enough option★Author Living-Person Safety Check — quality 8.93, this model IS the best-value good-enough option★Language Detection — quality 9.89, 1.4x the cost of the best-value good-enough optionPublication Title Generation — quality 8.24, this model IS the best-value good-enough option★Translation — quality 9.86, this model IS the best-value good-enough option★Topic Cluster Naming — quality 8.09, 1.6x the cost of the best-value good-enough optionTopic Grouping and Client Matching — quality 8.21, this model IS the best-value good-enough option★Engagement Triage — quality 8.20, this model IS the best-value good-enough option★Prompt Adaptation — quality 8.12, 2.7x the cost of the best-value good-enough optionX Post Selection — quality 8.72, this model IS the best-value good-enough option★Claim Extraction — quality 7.35, this model IS the best-value good-enough option★Author Voice Generation — quality 9.21, 1.8x the cost of the best-value good-enough optionImage Prompt Generation — quality 8.55, this model IS the best-value good-enough option★Topic-to-Section Assignment — quality 8.20, this model IS 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
Onboarding Chapter Prompt Adaptation ★Infrastructure & Utility91%HIGHbest value
Author Living-Person Safety Check ★Relevance, Classification & Matching96%MEDIUMbest value
Activity Feed Blurb Generation ★Social & Promotional Content95%MEDIUMbest value
Structured Output Extraction ★Structured Data & Fact Extraction97%RANKEDbest value
Topic Grouping and Client Matching ★Relevance, Classification & Matching95%RANKEDbest value
X Post Selection ★Relevance, Classification & Matching100%RANKEDbest value
Translation ★ bestInfrastructure & Utility100%RANKEDbest value
Social Post Promotion ★Social & Promotional Content90%RANKEDbest value
S-1 TOC Extraction ★Structured Data & Fact Extraction91%MEDIUMbest value
Engagement Triage ★Relevance, Classification & Matching92%HIGHbest value
Claim Extraction ★Structured Data & Fact Extraction93%HIGHbest value
Topic-to-Section Assignment ★Topic Organization & Clustering91%MEDIUMbest value
Image Prompt Generation ★Infrastructure & Utility93%RANKEDbest value
Publication Title Generation ★Content Summarization & Synthesis92%RANKEDbest value
Language DetectionRelevance, Classification & Matching98%RANKED1.4x
Topic Cluster NamingTopic Organization & Clustering93%HIGH1.6x
Author Voice GenerationLong-form Content Generation95%RANKED1.8x
Prompt AdaptationInfrastructure & Utility91%MEDIUM2.7x

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.