Looking for an honest Meta Llama 3.1 405B vs OpenAI o1-mini 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 OpenAI o1-mini comes out ahead 62/100 to 69/100 — a 7-point gap. The widest gap is in design and build, where the OpenAI o1-mini pulls noticeably ahead.
Prices may vary · We may earn a commission on purchases. Learn more
OpenAI o1-mini narrowly beats the Meta Llama 3.1 405B in the ai language models category, especially in design, scoring 69 vs 62. If you want the better overall ai language models, OpenAI o1-mini is the recommended choice.
✓ Pros
✗ Cons
✓ Pros
✗ Cons
Lower cost = better value. Free = open-source self-hosted.
| Metric | 3.1 405B | OpenAI o1-mini |
|---|---|---|
| Input (Prompt) | ✓Free/1M | $3.00/1M |
| Output (Completion) | ✓Free/1M | $12.00/1M |
| Open Source | ✓ Free | Proprietary |
Context Window (tokens)
| Metric | 3.1 405B | OpenAI o1-mini |
|---|---|---|
| Max Output | 4,096 tok | ✓65,536 tok |
| Speed | 30 tok/s | ✓80 tok/s |
| Time to First Token | 1.5s | ✓1.2s |
| Languages | 8+ | ✓30+ |
Higher is better. Industry-standard AI evaluation benchmarks.
3.1 405B
OpenAI o1-mini
3.1 405B
OpenAI o1-mini
3.1 405B
OpenAI o1-mini
3.1 405B
OpenAI o1-mini
3.1 405B
OpenAI o1-mini
| Feature | 3.1 405B | OpenAI o1-mini |
|---|---|---|
| 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 | 3.1 405B | OpenAI o1-mini |
|---|---|---|
| Provider | Meta | OpenAI |
| Parameters | 405B | — |
| Knowledge Cutoff | 2023-12 | 2024-09 |
| License | Llama 3.1 Community | Commercial |
| Best For | open sourceself hostingfine tuningenterprise privacy | mathcodingstemcost efficient reasoning |
Buy Meta Llama 3.1 405B if…
Choose the Meta Llama 3.1 405B if budget is your top priority — it offers competitive specs at a lower price point.
Buy OpenAI o1-mini if…
Buy the OpenAI o1-mini if you want the best camera quality in this comparison. It scores higher overall and is the recommended choice for most buyers.
OpenAI o1-mini narrowly beats the Meta Llama 3.1 405B in the ai language models category, especially in design, scoring 69 vs 62. If you want the better overall ai language models, OpenAI o1-mini is the recommended choice.
No, OpenAI o1-mini scores higher (75 vs 75).
Check the latest prices using the buy links above.
Choose the Meta Llama 3.1 405B if budget is your top priority — it offers competitive specs at a lower price point.
Buy the OpenAI o1-mini if you want the best camera quality in this comparison. It scores higher overall and is the recommended choice for most buyers.
Reviewed by VersusMatrix Editorial Team
Last updated: April 25, 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.
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.