Grammarly Cost Tuning

Grammarly Cost Tuning

Overview

Grammarly enterprise pricing is per-seat with API costs driven by text check request volume and document length. Each grammar check, tone analysis, and plagiarism scan consumes API quota proportional to word count. For organizations processing thousands of documents daily, unchecked API usage — especially on long documents or duplicate content — creates substantial cost overrun. Implementing validation gates, result caching, and sample-based scoring reduces API spend by 40-60% without sacrificing quality coverage.

Cost Breakdown

API Call Reduction

class GrammarlyCostGate {
  private resultCache = new Map<string, any>();

  shouldCheck(text: string): boolean {
    const words = text.split(/\s+/).length;
    return words >= 30 && words <= 50_000; // Skip too-short; chunk too-long
  }

  async checkWithCache(text: string, checkFn: (t: string) => Promise<any>): Promise<any> {
    const hash = this.hashText(text);
    if (this.resultCache.has(hash)) return this.resultCache.get(hash);
    const result = await checkFn(text);
    this.resultCache.set(hash, result);
    return result;
  }

  sampleDocuments(documents: string[], rate = 0.2): string[] {
    // For bulk content audits, score a representative sample
    return documents.filter(() => Math.random() < rate);
  }