Looking for an honest Google Gemini 2.5 Flash vs Meta Llama 3.1 405B 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 Google Gemini 2.5 Flash comes out ahead 83/100 to 62/100 — a 21-point gap. The widest gap is in battery life, where the Google Gemini 2.5 Flash pulls noticeably ahead.
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Google Gemini 2.5 Flash clearly outperforms the Meta Llama 3.1 405B in the ai language models category, especially in battery life, scoring 83 vs 62. If you want the better overall ai language models, Google Gemini 2.5 Flash is the recommended choice.
✓ Pros
✗ Cons
Lower cost = better value. Free = open-source self-hosted.
| Metric | 2.5 Flash | 3.1 405B |
|---|---|---|
| Input (Prompt) | $0.15/1M | ✓Free/1M |
| Output (Completion) | $0.60/1M | ✓Free/1M |
| Open Source | Proprietary | ✓ Free |
Context Window (tokens)
| Metric | 2.5 Flash | 3.1 405B |
|---|---|---|
| Max Output | ✓65,536 tok | 4,096 tok |
| Speed | ✓200 tok/s | 30 tok/s |
| Time to First Token | ✓300ms | 1.5s |
| Languages | ✓40+ | 8+ |
Higher is better. Industry-standard AI evaluation benchmarks.
2.5 Flash
3.1 405B
2.5 Flash
3.1 405B
2.5 Flash
3.1 405B
2.5 Flash
3.1 405B
2.5 Flash
3.1 405B
| Feature | 2.5 Flash | 3.1 405B |
|---|---|---|
| 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 | 2.5 Flash | 3.1 405B |
|---|---|---|
| Provider | Meta | |
| Parameters | — | 405B |
| Knowledge Cutoff | 2025-01 | 2023-12 |
| License | Commercial | Llama 3.1 Community |
| Best For | reasoningspeedmultimodalcost efficiencylong context | open sourceself hostingfine tuningenterprise privacy |
Buy Google Gemini 2.5 Flash if…
Buy the Google Gemini 2.5 Flash if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
Buy Meta Llama 3.1 405B if…
The Meta Llama 3.1 405B is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
Google Gemini 2.5 Flash clearly outperforms the Meta Llama 3.1 405B in the ai language models category, especially in battery life, scoring 83 vs 62. If you want the better overall ai language models, Google Gemini 2.5 Flash is the recommended choice.
Yes, Google Gemini 2.5 Flash scores higher overall (75 vs 75).
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Buy the Google Gemini 2.5 Flash if you want the best overall value in this comparison. It scores higher overall and is the recommended choice for most buyers.
The Meta Llama 3.1 405B is worth considering if you prefer its specific design, ecosystem, or brand — though it scores lower overall in our comparison.
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.