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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. GPT-4.5 Orion vs Nano Banana Pro (Gemini 3 Pro Image)

Pairwise benchmark snapshot · Aug 1, 2026noindex (thin pair)

GPT-4.5 Orion vs Nano Banana Pro (Gemini 3 Pro Image) benchmark

Comparing verified benchmark accuracy, speed, and token pricing between GPT-4.5 Orion and Nano Banana Pro (Gemini 3 Pro Image). Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Both GPT-4.5 Orion and Nano Banana Pro (Gemini 3 Pro Image) present distinct architectural strengths. Compare the verified benchmark matrix below to choose the model tailored to your specific application requirements.
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OpenAI
GPT-4.5 Orion

OpenAI largest dense non-reasoning model with expansive world knowledge and reduced hallucinations.

Img Elo 1,540
Google
Nano Banana Pro (Gemini 3 Pro Image)

Google DeepMind frontier multimodal image generation flagship with Deep Research and complex multi-object spatial reasoning.

Img Elo 1,299$134/1k imgs
Top Rival Showdowns for GPT-4.5 Orion
All Matchups
Compare vs:vs Reve 2.1vs Nano Banana 2 (Gemini 3.1 Flash Image)vs FLUX.2 [max]vs Ideogram 4.0 (Quality)vs Recraft V4.1 Utility Pro
Image Quality Leader

No shared data

Single model data

Generation Speed Leader

No shared data

No latency data

Value per Dollar Leader

No shared data

Unpriced

Head-to-Head Comparison

Overall Matchup Breakdown

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

GPT-4.5 Orion (0)vsNano Banana Pro (Gemini 3 Pro Image) (5)
GPT-4.5 Orion: 0W (0%)Overall: Nano Banana Pro (Gemini 3 Pro Image)Nano Banana Pro (Gemini 3 Pro Image): 5W (100%)
← GPT-4.5 OrionNano Banana Pro (Gemini 3 Pro Image) →
🏆Nano Banana Pro (Gemini 3 Pro Image)(3/3)

Visual Quality & Adherence

Arena Preference Elo, prompt fidelity & typography score

Benchmark
GPT-4.5 OrionvsNano Banana Pro (Gemini 3 Pro Image)
Image Elo
—vs1,299
Prompt adherence
—vs92.5%
Text rendering
—vs93%
GPT-4.5 Orion: 0WNano Banana Pro (Gemini 3 Pro Image): 3W
🏆Nano Banana Pro (Gemini 3 Pro Image)(1/1)

Generation Latency

Time to render full-resolution image snapshot (seconds)

Benchmark
GPT-4.5 OrionvsNano Banana Pro (Gemini 3 Pro Image)
Generation time
—vs4.2s
GPT-4.5 Orion: 0WNano Banana Pro (Gemini 3 Pro Image): 1W
🏆Nano Banana Pro (Gemini 3 Pro Image)(1/1)

Cost Efficiency

API inference cost per 1,000 generated images

Benchmark
GPT-4.5 OrionvsNano Banana Pro (Gemini 3 Pro Image)
Price per 1k images
—vs$134/1k
GPT-4.5 Orion: 0WNano Banana Pro (Gemini 3 Pro Image): 1W

Side-by-Side Benchmark Matrix

Image Elo
GPT-4.5 Orion—
Nano Banana Pro (Gemini 3 Pro Image)1,299
seed-bootstrap · Aug 1, 2026
Generation time
GPT-4.5 Orion—
Nano Banana Pro (Gemini 3 Pro Image)4.2s
seed-bootstrap · Aug 1, 2026
Price per 1k images
GPT-4.5 Orion—
Nano Banana Pro (Gemini 3 Pro Image)$134/1k
seed-bootstrap · Aug 1, 2026
Prompt adherence
GPT-4.5 Orion—
Nano Banana Pro (Gemini 3 Pro Image)92.5%
seed-bootstrap · Aug 1, 2026
Text rendering
GPT-4.5 Orion—
Nano Banana Pro (Gemini 3 Pro Image)93%
seed-bootstrap · Aug 1, 2026
BenchmarkGPT-4.5 OrionNano Banana Pro (Gemini 3 Pro Image)Advantage Delta
Image Elo—
1,299
seed-bootstrap · Aug 1, 2026
—
Generation time—
4.2s
seed-bootstrap · Aug 1, 2026
—
Price per 1k images—
$134/1k
seed-bootstrap · Aug 1, 2026
—
Prompt adherence—
92.5%
seed-bootstrap · Aug 1, 2026
—
Text rendering—
93%
seed-bootstrap · Aug 1, 2026
—
Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 100% with GPT-4.5 Orion
Monthly Image Production Volume25k images / month (25000 imgs)
Quick Presets:
GPT-4.5 Orion$0.00 / mo
Rate: $0/1k
Nano Banana Pro (Gemini 3 Pro Image)$3,350.00 / mo
Rate: $134/1k
Estimated Cost Delta

GPT-4.5 Orion is estimated to save $3,350.00/month ($40,200/year).

Based on 25k images generated

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatinsufficient data

Need list prices.

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGinsufficient data

Need context sizes.

Screenshots / visioninsufficient data

Both accept images. Defaulting to the higher-Elo side (undefined).

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatinsufficient dataNeed list prices.
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGinsufficient dataNeed context sizes.
Screenshots / visioninsufficient dataBoth accept images. Defaulting to the higher-Elo side (undefined).
Community Sentiment

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
OpenAI

GPT-4.5 Orion

Elo 1,540
SWE-bench71%
Speed (tok/s)60 tok/s
Input / 1M Tokens$75/1M
Output / 1M Tokens$150/1M
Google

Nano Banana Pro (Gemini 3 Pro Image)

Elo n/a
SWE-bench—
Speed (tok/s)—
Input / 1M Tokens$134/1k
Output / 1M Tokens$134/1k

Frequently Asked Questions

Which is better overall, GPT-4.5 Orion or Nano Banana Pro (Gemini 3 Pro Image)?
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, GPT-4.5 Orion or Nano Banana Pro (Gemini 3 Pro Image)?
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?
List prices are missing for at least one model.
Which is faster, GPT-4.5 Orion or Nano Banana Pro (Gemini 3 Pro Image)?
We do not have TTFT for both models.
Which has the larger context window?
Context window is missing for at least one model.
Can I self-host either model?
Neither model is marked open-weights here. You are comparing hosted APIs.
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. GPT-4.5 Orion and Nano Banana Pro (Gemini 3 Pro Image) Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All GPT-4.5 Orion matchups →|All Nano Banana Pro (Gemini 3 Pro Image) matchups →
GPT-4.5 Orion vs OpenAI o1 (previous gpt-flagship)GPT-4.5 Orion vs GPT-5 (next gpt-flagship)Nano Banana Pro (Gemini 3 Pro Image) vs Nano Banana 2 (Gemini 3.1 Flash Image) (next nano-banana)GPT-5.6 Terra vs GPT-4.5 OrionGemini 3.7 Flash vs GPT-4.5 OrionGemini 3 Pro vs GPT-4.5 Orion