Grammarly · AI paraphrasing & rewriting
Grammarly delivered an outstanding performance in the 82-word English academic rewriting benchmark, restructuring syntax in 1.5 seconds. It achieved 85.2% lexical diversity while retaining 100% of all 7 crucial facts (including the $1,250,000 figure, 84.2% ratio, and verification token) with zero login requirements, no truncation, and no watermarks.
US-West (California, AS16509)
TXT · Output attached · Open native file ↗
Subsequent pricing and service checks are shown separately without altering historical scores.
One run does not establish all complex scenes, untested paid maxima or long-term uptime.
Plans & historical pricing
Grammarly Free and Pro subscription pricing structure · 2026-10-31
Basic grammar and spell check, tone detection
Full sentence rewriting, tone adjustments, plagiarism check, AI content detection
2 plan / billing-period records, all listed; — means that period is not recorded.
Free tier is permanently free; Pro tier is $12/month with a 7-day free trial and email reminder sent 2 days prior to billing.
Cancellation, sources & verification record
Cancellation and refund terms unverified
Grammarly Plans Official Pricing Page ↗ · 2026-10-31 Capture 1 ↗
Pricing recorded on the test date · 2026-11-05
Free basic utility; Pro plans from $12/month
freemium_subscription
Historical context only; not current purchase guidance.
Delivery & access
- Free delivery record
- 96-word rewritten prose with instant Copy text (768 bytes · zero truncation)
- Watermark
- No watermark
- Free allowance
- Up to 125 words per submission without sign-up
- Account requirements
- Direct use with zero login or sign-up
- Maximum specification record
- 96-word rewritten prose with instant Copy text (768 bytes · zero truncation)
May include advertised capabilities; this does not establish a tested paid tier.
- Batch & API
- Single-passage interactive rewriting with one-click copy, document upload supported
- Manual refinement
- Not recorded or not verified
Tested result & sample
Grammarly cloud rewrote 82-word text deeply in 1.5s, retaining all 7 facts with professional layout (02_result.png, 03_download.png).
- Fixture
- anchor_paraphrase_v1
- Recorded environment
- US-West (California, AS16509)
- Network-observed server wait
- 1.5 s
- End-to-end reference
- 1.6 s
Network wait includes round trips, queuing and polling error, not pure inference time. Local timings depend on the device; repetition counts are not standardized in legacy records.
Experience, rules & trust
- Disclosure
- Clicking Paraphrase immediately displays the rewritten comparison on the right
- Interaction
- Not recorded or not verified
- Entity record
- Grammarly, Inc.
- Origin
- Not recorded or not verified
- Domain history record
- Not recorded or not verified
- Third-party tracking record
- No third-party services listed in this record; this is not proof that none exist.
- External information
- Not recorded or not verified
- Processing
- Grammarly cloud specialized LLM and paraphrasing engine
- Retention statement
- Certified enterprise-grade privacy stating user texts are not used for public model training
A recorded statement does not verify deletion or all data-processing behavior.
Verifiable audit trail & evidence
Four SHA-256-verified stages link the benchmark fixture, same-run interface screenshots, native exported artifact and archived pricing sources.
anchor_paraphrase_v1 · Inspect fixture & file inspector →
Captures entry rules, result view and export disclosure.
Screenshots, native output and official claims support different conclusions. Evidence grades are not product safety certifications.
Evaluation basis & full scores · Overall 91.5/100
Overall = honesty & reputation × 30% + capability × 70%. Component maxima follow this report’s rubric. List scores are rounded for display; original precision is retained here.
Scoring version 2.3.1 · Test fixture anchor_paraphrase_v1
Honesty & reputation · 96.5/100 · 30%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Pricing transparency | 34 / 35 | Explanation unavailable | Evidence A → |
| Interaction restraint | 29 / 30 | Explanation unavailable | Evidence A → |
| Background & reputation | 19 / 20 | Explanation unavailable | Evidence A → |
| Engineering & privacy | 14.5 / 15 | Explanation unavailable | Evidence A → |
Capability · 89.3/100 · 70%
| Criterion | Score | Rationale | Basis |
|---|---|---|---|
| Task quality | 54.3 / 65 | Fact Retention: 100% · Lexical Diversity: 85.2% · Semantic Similarity: 61.1% · Readability Score: 100/100 | Evidence A → |
| Deliverable specifications | 20 / 20 | Clean unwatermarked export (8/8); Export spec: 96-word rewritten prose with instant Copy text (768 bytes · zero truncation) | Evidence A → |
| Processing speed | 15 / 15 | Network-observed server wait: 1.5s (API mode: sync; network upload 0.1s / end-to-end 1.6s shown for reference only, never penalized) | Evidence A → |
Legacy scores may include advertised maximum capabilities. Read tested output separately from paid capabilities. Records without matching tiers and scope are not ranked together.
Revisions & corrections
Completed Grammarly online paraphraser (ai-paraphraser) same-anchor native benchmark and objective metric evaluation.