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© 2026 CompareLLM. Public benchmark data aggregated from Arena Elo, LiveBench, SWE-bench & OpenRouter.

Every score has a dated snapshot.

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  3. Google: Nano Banana Pro (Gemini 3 Pro Image Preview) vs Llama 3.1 405B

Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)

Google: Nano Banana Pro (Gemini 3 Pro Image Preview) vs Llama 3.1 405B benchmark

In this head-to-head showdown, Llama 3.1 405B is more budget-friendly at $3.5/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Choose Google: Nano Banana Pro (Gemini 3 Pro Image Preview) if your priority is peak reasoning, complex code generation, and top preference Elo. Choose Llama 3.1 405B if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
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Google
Google: Nano Banana Pro (Gemini 3 Pro Image Preview)

Auto-discovered from OpenRouter (google/gemini-3-pro-image-preview). Preview until a second source matches.

$12/1M out
Meta
Llama 3.1 405B

Meta flagship open-weight 405B dense foundation model with 128k context window.

Elo 1,370$3.5/1M out
Top Rival Showdowns for Google: Nano Banana Pro (Gemini 3 Pro Image Preview)
All Matchups
Compare vs:vs Claude Opus 4.5vs GPT-5vs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference Leader

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar Leader

Llama 3.1 405B

$3.5 / 1M output

Capability Percentiles

Relative percentile scores computed across all active models in the benchmark catalog.

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect
Percentile 0–100
Dimensional AdvantageLlama 3.1 405B 6/6
Head-to-Head Comparison

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

Google: Nano Banana Pro (Gemini 3 Pro Image Preview) (0)vsLlama 3.1 405B (10)
Google: Nano Banana Pro (Gemini 3 Pro Image Preview): 0W (0%)Overall: Llama 3.1 405BLlama 3.1 405B: 10W (100%)
← Google: Nano Banana Pro (Gemini 3 Pro Image Preview)Llama 3.1 405B →
Llama 3.1 405B (5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Preference Elo
—vs1,370
Coding Elo
—vs1,385
SWE-bench
—vs58.4%
LiveBench
—vs61.2%
GPQA Diamond
—vs75.2%
Google: Nano Banana Pro (Gemini 3 Pro Image Preview): 0WLlama 3.1 405B: 5W
Llama 3.1 405B (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed
—vs42 tok/s
Time to first token
—vs360 ms
Google: Nano Banana Pro (Gemini 3 Pro Image Preview): 0WLlama 3.1 405B: 2W
Llama 3.1 405B (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price
$12/1Mvs$3.5/1M
Input price
$2/1Mvs$1.25/1M
Context window
66kvs128k
Google: Nano Banana Pro (Gemini 3 Pro Image Preview): 0WLlama 3.1 405B: 3W

Side-by-Side Benchmark Matrix

Preference Elo
Google: Nano Banana Pro (Gemini 3 Pro Image Preview)—
Llama 3.1 405B1,370
lmarena · Aug 17, 2026
Coding Elo
Google: Nano Banana Pro (Gemini 3 Pro Image Preview)—
Llama 3.1 405B1,385
lmarena · Aug 17, 2026
LiveBench
Google: Nano Banana Pro (Gemini 3 Pro Image Preview)—
Llama 3.1 405B61.2%
livebench · Aug 17, 2026
SWE-bench
Google: Nano Banana Pro (Gemini 3 Pro Image Preview)—
Llama 3.1 405B58.4%
swebench · Aug 17, 2026
GPQA Diamond
Google: Nano Banana Pro (Gemini 3 Pro Image Preview)—
Llama 3.1 405B75.2%
seed-bootstrap · Aug 1, 2026
Time to first token
Google: Nano Banana Pro (Gemini 3 Pro Image Preview)—
Llama 3.1 405B360 ms
seed-bootstrap · Aug 1, 2026
Output speed
Google: Nano Banana Pro (Gemini 3 Pro Image Preview)—
Llama 3.1 405B42 tok/s
seed-bootstrap · Aug 1, 2026
Input priceLlama 3.1 405B (+$0.75/1M)
Google: Nano Banana Pro (Gemini 3 Pro Image Preview)$2/1M
openrouter · Aug 17, 2026
Llama 3.1 405B$1.25/1M
seed-bootstrap · Aug 1, 2026
Output priceLlama 3.1 405B (+$8.5/1M)
Google: Nano Banana Pro (Gemini 3 Pro Image Preview)$12/1M
openrouter · Aug 17, 2026
Llama 3.1 405B$3.5/1M
seed-bootstrap · Aug 1, 2026
Context windowLlama 3.1 405B (+62k)
Google: Nano Banana Pro (Gemini 3 Pro Image Preview)66k
openrouter · Aug 17, 2026
Llama 3.1 405B128k
seed-bootstrap · Aug 1, 2026
BenchmarkGoogle: Nano Banana Pro (Gemini 3 Pro Image Preview)Llama 3.1 405BAdvantage Delta
Preference Elo—
1,370
lmarena · Aug 17, 2026
—
Coding Elo—
1,385
lmarena · Aug 17, 2026
—
LiveBench—
61.2%
livebench · Aug 17, 2026
—
SWE-bench—
58.4%
swebench · Aug 17, 2026
—
GPQA Diamond—
75.2%
seed-bootstrap · Aug 1, 2026
—
Time to first token—
360 ms
seed-bootstrap · Aug 1, 2026
—
Output speed—
42 tok/s
seed-bootstrap · Aug 1, 2026
—
Input price
$2/1M
openrouter · Aug 17, 2026
$1.25/1M
seed-bootstrap · Aug 1, 2026
Llama 3.1 405B (+$0.75/1M)
Output price
$12/1M
openrouter · Aug 17, 2026
$3.5/1M
seed-bootstrap · Aug 1, 2026
Llama 3.1 405B (+$8.5/1M)
Context window
66k
openrouter · Aug 17, 2026
128k
seed-bootstrap · Aug 1, 2026
Llama 3.1 405B (+62k)
Interactive Simulator (USD)

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Save up to 62% with Llama 3.1 405B
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Google: Nano Banana Pro (Gemini 3 Pro Image Preview)$250.00 / mo
In: $70Out: $180
Llama 3.1 405B$96.25 / mo
In: $43.75Out: $52.5
Estimated Cost Delta

Llama 3.1 405B is estimated to save $153.75/month ($1,845/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Llama 3.1 405B:Pick Llama 3.1 405B when you are optimizing output cost.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatLlama 3.1 405B

Lower output list price ($3.5/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGLlama 3.1 405B

Larger window (128k).

Screenshots / visionLlama 3.1 405B

Llama 3.1 405B is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatLlama 3.1 405BLower output list price ($3.5/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGLlama 3.1 405BLarger window (128k).
Screenshots / visionLlama 3.1 405BLlama 3.1 405B is the side marked multimodal in the catalog.
Community Sentiment

Cast Your Matchup Vote

0 total votes

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CompareLLM Matrix

Verified head-to-head card

LIVE
VS
Google

Google: Nano Banana Pro (Gemini 3 Pro Image Preview)

Elo n/a
LiveBench—
SWE-bench—
Speed—
Output cost$12/1M
Meta

Llama 3.1 405B

Elo 1,370
LiveBench61.2%
SWE-bench58.4%
Speed42 tok/s
Output cost$3.5/1M

Frequently Asked Questions

Which is better overall, Google: Nano Banana Pro (Gemini 3 Pro Image Preview) or Llama 3.1 405B?
We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, Google: Nano Banana Pro (Gemini 3 Pro Image Preview) or Llama 3.1 405B?
SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?
Llama 3.1 405B output tokens are $3.5/1M versus $12/1M. Input prices and retry rates still move the real bill.
Which is faster, Google: Nano Banana Pro (Gemini 3 Pro Image Preview) or Llama 3.1 405B?
We do not have TTFT for both models.
Which has the larger context window?
Llama 3.1 405B accepts 128k tokens versus 66k.
Can I self-host either model?
Llama 3.1 405B is marked open-weights in our catalog. The other side is a closed API. Check the provider license before you ship weights.
Are these scores from CompareLLM’s own evals?
No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?
Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Google: Nano Banana Pro (Gemini 3 Pro Image Preview) and Llama 3.1 405B Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All Google: Nano Banana Pro (Gemini 3 Pro Image Preview) matchups →|All Llama 3.1 405B matchups →
Llama 3.1 405B vs Llama 3.1 70B (next llama)Gemini 3 Pro vs Llama 3.1 405BGemini 3 Flash vs Llama 3.1 405BLlama 4 Maverick vs Llama 3.1 405BGemini 2.0 Flash Thinking vs Llama 3.1 405BGemini 3.6 Pro vs Llama 3.1 405B