AI21 Labs vs Perplexity
Which Foundation Models AI tool is better in 2026?
AI21 Labs
Advanced language AI for enterprise applications
Perplexity
AI-powered answer engine delivering real-time, cited responses to complex queries.
Side-by-side
Perplexity leads on both fronts — more capital raised ($2.0B) and a lower entry price than AI21 Labs.
| Metric | AI21 Labs | Perplexity |
|---|---|---|
| Taglinei | Advanced language AI for enterprise applications | AI-powered answer engine delivering real-time, cited responses to complex queries. |
| Foundedi | 2017🏆 | 2022 |
| HQi | Tel Aviv, IL | San Francisco, US |
| Employeesi | 200-500 | 51-200🏆 |
| Neuron scorei | 51 | 82🏆 |
| Total fundingi | $336M | $2.0B🏆 |
| Latest roundi | Series C · Nov 2023 | Series F · Sep 2025 |
| Valuationi | $1.4B | $20B🏆 |
| Cheapest paid plani | — | Pro · $20/mo🏆 |
| Free plani | ✗ | ✓ |
| Free triali | ✓ | ✗ |
| Top tier pricei | Enterprise / Custom Solutions · Contact sales | Pro (Annual) · $200/mo |
| Pricing summaryi | 2 published plans | 2 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for AI21 Labs and Perplexity.
| Capability | AI21 Labs | Perplexity |
|---|---|---|
| MCP support | ✗ | ✓ |
| Public API | ✓ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✓ |
| SDK languages | 2 (Python, TypeScript) | 2 (Python, Node.js) |
| Free plan | ✗ | ✓ |
| Free trial | ✓ | ✗ |
| Verified | ✓ | ✗ |
| Active deal | ✗ | ✓ |
🟢 Strengths of AI21 Labs
- Offers a free trial
- More mature (2017)
- Verified profile
🔵 Strengths of Perplexity
- Has raised more capital ($2.0B vs $336M)
- Higher Neuron score (82 vs 51)
- Offers a free plan
- Newer company (2022)
Which should you choose?
Choose Perplexity if price matters most — it starts at Free, which is friendlier for teams watching burn. Both Foundation Models tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Perplexity if you want the most established option — it has raised $2.0B, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
💸 Deals
1 month of Perplexity Pro free for students
Students get one free month of Perplexity Pro — unlimited Pro searches, GPT-5, Claude, and image generation included.
Terms: Requires .edu email verification.
Frequently asked questions
AI21 Labs vs Perplexity — which is better?
It depends on your priority. AI21 Labs is the leaner option; Perplexity is cheaper to start. See the side-by-side table above.
Is AI21 Labs cheaper than Perplexity?
No — Perplexity's cheapest paid plan is Pro · $20/mo, while AI21 Labs's is Free trial.
Do AI21 Labs and Perplexity offer free plans?
AI21 Labs: Free trial only. Perplexity: Yes, has a free plan.
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