Pairwise benchmark snapshot · Aug 1, 2026

GPT Image 1.5 vs Nano Banana 2 Lite benchmark

Name: GPT Image 1.5 vs Nano Banana 2 Lite AI benchmark comparison
Creator: CompareLLM
License: https://creativecommons.org/licenses/by/4.0/

Comparing verified benchmark accuracy, speed, and token pricing between GPT Image 1.5 and Nano Banana 2 Lite. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Share Analysis:

Verified Head-to-Head Advantage Breakdown

5 direct benchmark disciplines evaluated across capability, speed, and cost

GPT Image 1.5 (3)Nano Banana 2 Lite (2)

GPT Image 1.5

3 of 5 Wins

✓Image Elo✓Prompt adherence✓Text rendering

Nano Banana 2 Lite

2 of 5 Wins

✓Generation time✓Price per 1k images

OpenAI

Leads 3 of 5 metrics

GPT Image 1.5

Previous OpenAI image generation flagship. High fidelity with proven enterprise reliability.

Img Elo 1,313$133/1k imgs

Google

Leads 2 of 5 metrics

Nano Banana 2 Lite

Sub-1.5 second ultra-low latency tier for real-time applications and mobile game asset pipelines.

Lite / Sub-1.5sImg Elo 1,293$33.6/1k imgs

Top Rival Showdowns for GPT Image 1.5

All Matchups

Compare vs:vs Reve 2.1 vs Nano Banana Pro (Gemini 3 Pro Image)vs FLUX.2 [max]vs Ideogram 4.0 (Quality)vs Recraft V4.1 Utility Pro

Image Quality LeaderGPT Image 1.5 Wins

GPT Image 1.5

Δ 20 Image Elo pts

Generation Speed LeaderNano Banana 2 Lite Wins

Nano Banana 2 Lite

1.4s per render

Value per Dollar LeaderNano Banana 2 Lite Wins

Nano Banana 2 Lite

$33.6/1k images

Head-to-Head Comparison

Overall Matchup Breakdown

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

GPT Image 1.5 (3)vsNano Banana 2 Lite (2)

GPT Image 1.5: 3W (60%)Overall: GPT Image 1.5Nano Banana 2 Lite: 2W (40%)

← GPT Image 1.5Nano Banana 2 Lite →

🏆GPT Image 1.5(3/3)

Visual Quality & Adherence

Arena Preference Elo, prompt fidelity & typography score

Benchmark

GPT Image 1.5vsNano Banana 2 Lite

Image Elo

1,313vs1,293+20

Prompt adherence

91%vs89.5%+1.5%

Text rendering

90.5%vs90%+0.5%

GPT Image 1.5: 3WNano Banana 2 Lite: 0W

🏆Nano Banana 2 Lite(1/1)

Generation Latency

Time to render full-resolution image snapshot (seconds)

Benchmark

GPT Image 1.5vsNano Banana 2 Lite

Generation time

3.5svs1.4s+2.1s

GPT Image 1.5: 0WNano Banana 2 Lite: 1W

🏆Nano Banana 2 Lite(1/1)

Cost Efficiency

API inference cost per 1,000 generated images

Benchmark

GPT Image 1.5vsNano Banana 2 Lite

Price per 1k images

$133/1kvs$33.6/1k+$99.4/1k

GPT Image 1.5: 0WNano Banana 2 Lite: 1W

Side-by-Side Benchmark Matrix

Image Elo+20

GPT Image 1.51,313

seed-bootstrap · Aug 1, 2026

Nano Banana 2 Lite1,293

seed-bootstrap · Aug 1, 2026

Generation time+2.1s

GPT Image 1.53.5s

seed-bootstrap · Aug 1, 2026

Nano Banana 2 Lite1.4s

seed-bootstrap · Aug 1, 2026

Price per 1k images+$99.4/1k

GPT Image 1.5$133/1k

seed-bootstrap · Aug 1, 2026

Nano Banana 2 Lite$33.6/1k

seed-bootstrap · Aug 1, 2026

Prompt adherence+1.5%

GPT Image 1.591%

seed-bootstrap · Aug 1, 2026

Nano Banana 2 Lite89.5%

seed-bootstrap · Aug 1, 2026

Text rendering+0.5%

GPT Image 1.590.5%

seed-bootstrap · Aug 1, 2026

Nano Banana 2 Lite90%

seed-bootstrap · Aug 1, 2026

Benchmark	GPT Image 1.5	Nano Banana 2 Lite	Advantage Delta
Image Elo	1,313 seed-bootstrap · Aug 1, 2026	1,293 seed-bootstrap · Aug 1, 2026	+20
Generation time	3.5s seed-bootstrap · Aug 1, 2026	1.4s seed-bootstrap · Aug 1, 2026	+2.1s
Price per 1k images	$133/1k seed-bootstrap · Aug 1, 2026	$33.6/1k seed-bootstrap · Aug 1, 2026	+$99.4/1k
Prompt adherence	91% seed-bootstrap · Aug 1, 2026	89.5% seed-bootstrap · Aug 1, 2026	+1.5%
Text rendering	90.5% seed-bootstrap · Aug 1, 2026	90% seed-bootstrap · Aug 1, 2026	+0.5%

Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 75% with Nano Banana 2 Lite

Monthly Image Production Volume25k images / month (25000 imgs)

Quick Presets:

GPT Image 1.5$3,325.00 / mo

Rate: $133/1k

Nano Banana 2 Lite$840.00 / mo

Rate: $33.6/1k

Estimated Cost Delta

Nano Banana 2 Lite is estimated to save $2,485.00/month ($29,820/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 Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	insufficient data	Need list prices.
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	insufficient data	Need context sizes.
Screenshots / vision	insufficient data	Both accept images. Defaulting to the higher-Elo side (undefined).

Community Sentiment

Cast Your Matchup Vote

0 total votes

Community Discussions (0)

No comments posted on this matchup yet. Be the first to share an evaluation note!

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK

OpenAI

GPT Image 1.5

Elo n/a

SWE-bench—

Speed (tok/s)—

Input / 1M Tokens$133/1k

Output / 1M Tokens$133/1k

Google

Nano Banana 2 Lite

Elo n/a

SWE-bench—

Speed (tok/s)—

Input / 1M Tokens$33.6/1k

Output / 1M Tokens$33.6/1k

Frequently Asked Questions

Which is better overall, GPT Image 1.5 or Nano Banana 2 Lite?: 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 Image 1.5 or Nano Banana 2 Lite?: 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 Image 1.5 or Nano Banana 2 Lite?: 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 Image 1.5 and Nano Banana 2 Lite Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Similar Head-to-Head Comparisons

All GPT Image 1.5 matchups →|All Nano Banana 2 Lite matchups →

GPT Image 1.5 vs DALL-E 3 (previous gpt-image)GPT Image 1.5 vs GPT Image 2 (High) (next gpt-image)Nano Banana 2 Lite vs Nano Banana 2 (Gemini 3.1 Flash Image) (previous nano-banana)GPT Image 2 (High) vs Nano Banana 2 Lite Nano Banana Pro (Gemini 3 Pro Image) vs Nano Banana 2 Lite GPT Image 2 (Low / Fast) vs Nano Banana 2 Lite

Benchmark

GPT Image 1.5

Nano Banana 2 Lite

Advantage Delta

Image Elo

1,313

seed-bootstrap · Aug 1, 2026

1,293

seed-bootstrap · Aug 1, 2026

+20

Generation time

3.5s

seed-bootstrap · Aug 1, 2026

1.4s

seed-bootstrap · Aug 1, 2026

+2.1s

Price per 1k images

$133/1k

seed-bootstrap · Aug 1, 2026

$33.6/1k

seed-bootstrap · Aug 1, 2026

+$99.4/1k

Prompt adherence

91%

seed-bootstrap · Aug 1, 2026

89.5%

seed-bootstrap · Aug 1, 2026

+1.5%

Text rendering

90.5%

seed-bootstrap · Aug 1, 2026

90%

seed-bootstrap · Aug 1, 2026

+0.5%

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 Workload	Recommended Pick	Evaluation Rationale
Repo / coding agents	insufficient data	Need SWE-bench on both sides.
High-volume chat	insufficient data	Need list prices.
Voice / low-latency UI	insufficient data	Need TTFT on both sides.
Long-document RAG	insufficient data	Need context sizes.
Screenshots / vision	insufficient data	Both accept images. Defaulting to the higher-Elo side (undefined).

Frequently Asked Questions

Which is better overall, GPT Image 1.5 or Nano Banana 2 Lite?

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 Image 1.5 or Nano Banana 2 Lite?

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 Image 1.5 or Nano Banana 2 Lite?

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 Image 1.5 and Nano Banana 2 Lite Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.