AI21 Labs
AI21 Labs ranks #53 of 91 providers on BenchLeader by its best model, with 7 ranked models. Its best model is Jamba 1.5 Large at 42.2 on the BenchLeader Index, strongest in human preference. Prices run from $0.250 to $3.50 per million tokens blended; Jamba 1.5 Mini is the cheapest ranked option. 7 of its 11 models ship open weights. It has shipped 4 dated releases, roughly one every 92 days; the last was 8 Jan 2026, so the next would be due between 4 Mar 2026 and 16 May 2026 on that pattern.
- Provider rank
- #53
- by best model
- Best index
- 42.2
- Jamba 1.5 Large
- Ranked models
- 7
- 7 open weights
- Cheapest ranked
- $0.250/M
- Jamba 1.5 Mini
Release timeline
Each model’s best configuration by release date. The top eight are labelled; hover any point for its name.
- AI21 Labs5
Next release
Over the last two years AI21 Labs shipped 4 distinct models, one every 92 days on median. The latest arrived on 8 Jan 2026.
If the cadence holds, the next one lands between 4 Mar 2026 and 16 May 2026.
An estimate from past release dates only. It knows nothing about roadmaps or announcements.
Models
Every AI21 Labs model with a result, one row per model; switch to all configurations to see each reasoning effort.
| # | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1 | Jamba 1.5 Largeopen | 42.2±5 | $3.50 | – | – | 256k | 2024-08-22 | 2026-10-22 |
| 2 | Jamba Reasoning 3Bthinkingopen | 41.9±7 | – | – | – | 262k | 2025-10-08 | 2025-10-08 · stale |
| 3 | Jamba 1.7 Largeopen | 41.3±2 | – | – | – | 256k | 2025-07-07 | 2025-07-07 · stale |
| 4 | Jamba 1.7 Miniopen | 39.5±3 | – | – | – | 258k | 2025-07-07 | 2025-07-07 · stale |
| 5 | Jamba 1.5 Miniopen | 37.3±7 | $0.250 | – | – | 256k | 2024-08-22 | 2026-10-22 |
| 6 | Jamba Large 1.6 | 26.0±8 | $3.50 | – | – | 256k | – | 2026-10-13 |
| 7 | Jamba Mini 1.6 | 21.8±7 | $0.250 | – | – | 256k | – | 2026-10-13 |
| 8 | Jamba Large 1.7 | – | $3.50 | – | – | 256k | – | – |
| 9 | Jamba Mini 1.7 | – | $0.250 | – | – | 256k | – | – |
| 10 | Jamba Large(Jul 2025)open | – | $3.50 | – | – | 256k | 2025-07-03 | – |
| 11 | Jamba Mini(Jan 2026)open | – | $0.250 | – | – | 256k | 2026-01-08 | – |
Latest news
- Nebius Talks AI21 Deal As Full Stack AI Ambitions Meet ValuationYahoo Finance · 11 Apr 2026
- AI21’s fall from unicorn to survival modeCTech · 19 May 2026
- Amnon Shashua’s AI firm cuts over 60% of staff after sale talks collapseYnetnews · 18 May 2026
- Nvidia in Advanced Talks To Buy AI21 Labs in $2–3 Billion Talent-Driven AI DealThe Media Line · 31 Dec 2025
- AI21 Co-Founder Says Firm Held Early Talks With Nvidia, OthersBloomberg.com · 7 Jan 2026
- OpenAI rival AI21 downsizes staff for strategic shiftTech in Asia · 18 May 2026
- AI21 Engineers: Stateful AI Systems "Lie to You Confidently" — Inside the vLLM Bugs That Hid in Plain Sightfinance.biggo.com · 19 Sept 2026
- Nebius Picking Up Where Nvidia Left Off? Acquisition Rumor Sparks New Stock Surge24/7 Wall St. · 10 Apr 2026