Looking for an honest OpenAI GPT-3.5 Turbo vs AI21 Labs Jamba 1.5 Large comparison in 2026? We scored both ai language models on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. In our overall scoring the AI21 Labs Jamba 1.5 Large comes out ahead 41/100 to 53/100 — a 12-point gap. The widest gap is in display, where the OpenAI GPT-3.5 Turbo pulls noticeably ahead.
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AI21 Labs Jamba 1.5 Large edges out the OpenAI GPT-3.5 Turbo in the ai language models category, especially in performance, scoring 53 vs 41. If you want the better overall ai language models, AI21 Labs Jamba 1.5 Large is the recommended choice.
Scores are relative within the ai language modelscategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
✓ Pros
✗ Cons
✓ Pros
✗ Cons
Lower cost = better value. Free = open-source self-hosted.
| Metric | GPT-3.5 Turbo | 1.5 Large |
|---|---|---|
| Input (Prompt) | ✓$0.50/1M | $2.00/1M |
| Output (Completion) | ✓$1.50/1M | $8.00/1M |
| Open Source | Proprietary | Proprietary |
Context Window (tokens)
| Metric | GPT-3.5 Turbo | 1.5 Large |
|---|---|---|
| Max Output | 4,096 tok | 4,096 tok |
| Speed | ✓400 tok/s | 120 tok/s |
| Time to First Token | ✓100ms | 700ms |
| Languages | ✓50+ | 9+ |
Higher is better. Industry-standard AI evaluation benchmarks.
GPT-3.5 Turbo
1.5 Large
GPT-3.5 Turbo
1.5 Large
GPT-3.5 Turbo
1.5 Large
GPT-3.5 Turbo
1.5 Large
GPT-3.5 Turbo
1.5 Large
| Feature | GPT-3.5 Turbo | 1.5 Large |
|---|---|---|
| Reasoning / Chain-of-Thought | ✕ | ✕ |
| Vision (Image Input) | ✕ | ✕ |
| Audio Input | ✕ | ✕ |
| Video Input | ✕ | ✕ |
| Image/Audio Output | ✕ | ✕ |
| Function Calling / Tools | ✓ | ✓ |
| JSON Mode | ✓ | ✓ |
| Real-time Web Access | ✕ | ✕ |
| Fine-tuning Support | ✓ | ✕ |
| Batch API | ✓ | ✓ |
| Streaming | ✓ | ✓ |
| Open Source | ✕ | ✕ |
| Field | GPT-3.5 Turbo | 1.5 Large |
|---|---|---|
| Provider | OpenAI | AI21 Labs |
| Parameters | — | 398B (52B active) |
| Knowledge Cutoff | 2021-09 | 2024-03 |
| Best For | legacysimple taskshigh volumecost efficiency | long contextenterprisedocument analysisunique architecture |
Buy OpenAI GPT-3.5 Turbo if…
Choose the OpenAI GPT-3.5 Turbo if budget is your top priority — it offers competitive specs at a lower price point.
Buy AI21 Labs Jamba 1.5 Large if…
Buy the AI21 Labs Jamba 1.5 Large if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.
AI21 Labs Jamba 1.5 Large edges out the OpenAI GPT-3.5 Turbo in the ai language models category, especially in performance, scoring 53 vs 41. If you want the better overall ai language models, AI21 Labs Jamba 1.5 Large is the recommended choice.
No, AI21 Labs Jamba 1.5 Large scores higher (75 vs 75).
Check the latest prices using the buy links above.
Choose the OpenAI GPT-3.5 Turbo if budget is your top priority — it offers competitive specs at a lower price point.
Buy the AI21 Labs Jamba 1.5 Large if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.
Reviewed by VersusMatrix Editorial Team
Last updated: April 28, 2026
Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.