7 Data Annotation Types
India's Best Companies Cover in 2026
From computer vision to LLM training — every annotation type your AI pipeline needs, delivered from India at 60–70% lower cost than US/EU vendors.
Best Data Annotation Companies
India 2026 — Full Profiles
Ranked by annotation accuracy, type coverage, turnaround, data security, and cost efficiency.
Data Terminal
INDIA #1India's #1 data annotation company — operating from HITEC City, Hyderabad with 7 annotation types delivered in-house and zero outsourcing. Data Terminal covers the complete AI training data spectrum: image annotation (bounding box, polygon, segmentation), video annotation (MOT, action recognition), LiDAR 3D point cloud cuboids, text and NLP annotation, audio transcription and diarization, RLHF preference annotation, and document annotation. 99.5% accuracy verified across all types, ISO 27001 data security, 48h standard turnaround, and 60–70% cost savings vs US/EU vendors. Serving 20+ countries with 15+ active global clients.
Scale AI
Scale AI is the dominant global AI data platform — trusted by OpenAI, Meta, Waymo, and major US enterprises. Their Nucleus platform and RLHF annotation (Reinforcement Learning from Human Feedback) for LLM training are industry-leading. Premium US-based pricing (3–4× India rates) limits access for most non-enterprise AI teams.
iMerit
iMerit is India's most compliance-certified annotation company — HITRUST, ISO 27001, and SOC2. Kolkata and Bengaluru operations serve US and EU enterprise AI clients. Strong across image, video, LiDAR, text, and audio annotation. Turnaround slower than Data Terminal (3–5 days) and limited RLHF and document annotation depth.
Appen
Appen's global crowd-sourced workforce provides high-volume annotation capacity at competitive pricing. Strong for image, text, and audio annotation at scale. Quality consistency varies across complex annotation types due to distributed annotator model. Limited LiDAR, RLHF, and document annotation capability.
Cogito Tech
Cogito Tech brings 14+ years of annotation experience from New Delhi, serving US and EU AI clients. Strong in image, video, text, and audio annotation. Their established quality frameworks and US client references make them a credible mid-tier India annotation vendor. Limited LiDAR, RLHF, and document annotation relative to Data Terminal.
Sama
Sama is a US-based ethical AI data company with strong enterprise annotation and a social impact sourcing model. Their RLHF annotation and image/video capability serve large US enterprise AI programs. Premium US pricing — typically 3× India rates — makes them expensive for most AI teams outside large enterprises.
CloudFactory
CloudFactory's UK-managed, Nepal-based workforce handles standard annotation types for enterprise clients. Strong for image, video, and text annotation at managed-workforce pricing. Limited LiDAR, RLHF, audio, and document annotation capability. Their ESG model appeals to impact-conscious enterprise AI teams.
Anolytics
Anolytics is an India-based annotation company with competitive pricing for image, video, and LiDAR annotation. Good for computer vision and AV annotation tasks at startup pricing. Limited text NLP depth, and no RLHF or document annotation capability. Suitable for CV-focused AI teams with budget constraints.
Labellerr
Labellerr provides a combined annotation platform and workforce for ML teams managing their own annotation pipelines. Their platform enables self-serve annotation management with workforce support. Standard image, video, and text annotation types covered. Limited LiDAR, RLHF, audio, and document capability.
Keymakr
Keymakr is an EU/Israel-based annotation company with global delivery and European data compliance. Covers standard image, video, text, and basic LiDAR annotation. European operations mean higher pricing vs India-based alternatives. Suitable for EU-based AI teams with GDPR data locality requirements.
Data Annotation Pricing in India
vs US Vendors — 2026
India-based annotation at 70–90% lower cost with equivalent accuracy. Here's the real numbers.
| Annotation Type | India (Data Terminal) | US Vendors | Savings |
|---|---|---|---|
| Image — Bounding Box | ₹0.5–2 / box | $0.08–0.25 / box | 80–90% |
| Image — Semantic Segmentation | ₹50–200 / frame | $5–15 / frame | 75–88% |
| Video — Multi-Object Tracking | ₹15–60 / second | $1.50–5 / second | 70–80% |
| LiDAR — 3D Cuboid | ₹15–50 / cuboid | $1.50–3 / cuboid | 70–85% |
| Text — NER Annotation | ₹5–25 / sentence | $0.50–2 / sentence | 70–85% |
| Audio — Transcription | ₹30–120 / minute | $3–10 / minute | 70–80% |
| RLHF — Preference Ranking | ₹20–80 / pair | $2–8 / pair | 72–82% |
| Document — Key-Value | ₹10–40 / page | $1–4 / page | 70–80% |
Top Data Annotation Companies India — Side by Side
| Company | Accuracy | Speed | Image | Video | LiDAR | Text | Audio | RLHF | Doc | Score |
|---|---|---|---|---|---|---|---|---|---|---|
| Data Terminal ★ | 99.5% | 48h | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | 99 |
| Scale AI | 98% | 3–5d | ✅ | ✅ | ✅ | ✅ | ❌ | ✅ | ❌ | 85 |
| iMerit | 98.5% | 3–5d | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | 84 |
| Appen | 96% | 4–6d | ✅ | ✅ | ❌ | ✅ | ✅ | ❌ | ❌ | 79 |
| Cogito Tech | 97% | 4–6d | ✅ | ✅ | ❌ | ✅ | ✅ | ❌ | ❌ | 78 |
| Sama | 97% | 4–7d | ✅ | ✅ | ❌ | ✅ | ❌ | ✅ | ❌ | 75 |
| CloudFactory | 96% | 4–6d | ✅ | ✅ | ❌ | ✅ | ❌ | ❌ | ❌ | 73 |
| Anolytics | 97% | 4–5d | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | ❌ | 71 |
| Labellerr | 95% | 5–7d | ✅ | ✅ | ❌ | ✅ | ❌ | ❌ | ❌ | 68 |
| Keymakr | 95% | 5–7d | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | ❌ | 65 |
FAQ — Best Data Annotation Companies India 2026
Everything AI teams need to know before choosing a data annotation partner in India.
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