Pairwise benchmark snapshot · Aug 17, 2026
In this head-to-head showdown, Llama 3.1 405B delivers higher overall intelligence and human-preferred responses (Elo 1,370 vs 1,260), while Llama 3.1 405B leads in SWE-bench software engineering benchmarks (58.4%), while Llama 3.1 405B is more budget-friendly at $3.5/1M per 1M output tokens, while Gemini 1.5 Pro provides faster response streaming (70 tok/s). Review the complete breakdown below to determine which model best fits your performance and budget requirements.
First million-token Gemini Pro. Baseline for 1.5 vs 2.5 vs 3.x Pro.
Meta flagship open-weight 405B dense foundation model with 128k context window.
Δ 110 Arena Elo pts
70 tok/s
$3.5 / 1M output
Relative percentile scores computed across all active models in the benchmark catalog.
Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.
Category wins across reasoning intelligence, generation speed, and token cost.
Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy
Generation throughput and time to first token responsiveness
Cost per million tokens and max context window length
| Benchmark | Gemini 1.5 Pro | Llama 3.1 405B | Advantage Delta |
|---|---|---|---|
| Preference Elo | Llama 3.1 405B (+110) | ||
| Coding Elo | — | — | |
| LiveBench | Llama 3.1 405B (+12%) | ||
| SWE-bench | Llama 3.1 405B (+20.4%) | ||
| GPQA Diamond | Llama 3.1 405B (+17.2%) | ||
| Time to first token | Gemini 1.5 Pro (+120 ms) | ||
| Output speed | 70 tok/s | 42 tok/s | Gemini 1.5 Pro (+28 tok/s) |
| Input price | $1.25/1M | $1.25/1M | — |
| Output price | $3.5/1M | Llama 3.1 405B (+$1.5/1M) | |
| Context window | Gemini 1.5 Pro (+1.9M) |
Simulate monthly production API costs in USD (US Dollar).
Llama 3.1 405B is estimated to save $22.50/month ($270/year).
Higher SWE-bench (58.4%).
Lower output list price ($3.5/1M).
Lower TTFT (240 ms).
Larger window (2M).
Gemini 1.5 Pro is the side marked multimodal in the catalog.
| Target Workload | Recommended Pick | Evaluation Rationale |
|---|---|---|
| Repo / coding agents | Llama 3.1 405B | Higher SWE-bench (58.4%). |
| High-volume chat | Llama 3.1 405B | Lower output list price ($3.5/1M). |
| Voice / low-latency UI | Gemini 1.5 Pro | Lower TTFT (240 ms). |
| Long-document RAG | Gemini 1.5 Pro | Larger window (2M). |
| Screenshots / vision | Gemini 1.5 Pro | Gemini 1.5 Pro is the side marked multimodal in the catalog. |
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Verified head-to-head card
