Image model catalog comparison
Compare Nano Banana Pro, GPT Image 2.5, Flare and Sunburst as listed in RelayMe: per-image cost, output resolutions and reference-image limits by channel. Legacy GPT Image 2 remains a separate column for existing users.
GPT Image 2, GPT Image 2.5, Flare and Sunburst are separate catalog deployments. This page checks RelayMe settings and prices; the names do not establish an official provider model identity, quality, speed or fidelity. The historical run below is not a controlled visual comparison of these entries. See the current model catalog →
Start with reference count, then price. The catalog limit is 5 images for base GPT Image 2.5, 14 for Flare, 14 for Sunburst and 14 for Nano Banana Pro. Base 2.5 sale 1K / 2K / 4K costs 60 / 80 / 100 credits, versus 90 / 100 / 180 for Nano Banana Pro. Equal prices do not establish equal results; check a small sample on the same product inputs first.
| Item | Nano Banana Pro | GPT Image 2.5 | GPT Image 2.5 Flare | GPT Image 2.5 Sunburst | GPT Image 2 |
|---|---|---|---|---|---|
| Credits per image · 1K (special offer) | 90 | 60 | 60 | 60 | 70 |
| Credits per image · 2K (special offer) | 100 | 80 | 80 | 80 | 90 |
| Credits per image · 4K (special offer) | 180 | 100 | 100 | 100 | 100 |
| Reference limit (special-offer channel) | Up to 14 | Up to 5 | Up to 14 | Up to 14 | Up to 14 |
| Output resolutions | 1K / 2K / 4K | 1K / 2K / 4K | 1K / 2K / 4K | 1K / 2K / 4K | 1K / 2K / 4K |
| Model family | Google · Gemini 3 Pro Image | RelayMe catalog · gpt-image-2.5 | RelayMe catalog · gpt-image-2.5-flare | RelayMe catalog · gpt-image-2.5-sunburst | OpenAI · GPT Image 2 |
Credit prices come from the same live model list as the pricing page USAGE table; 1,000 credits is about US$1. Public model catalog →
A dash means no catalog quote or parameter for that channel or tier, not free generation. Resolutions and reference limits are channel settings, not quality or fidelity guarantees. Check legacy GPT Image 2’s separate quality controls in the workspace.
For a budget of 100 single-output 2K generations: Nano Banana Pro sale is 10,000 credits (about US$10), and base GPT Image 2.5 sale is 8,000 (about US$8.00). At 4K the totals are 18,000 and 10,000 credits respectively. This multiplies a per-image rate by quantity; it is not a measured batch. Add charged retries and any other generation steps.
The tables compare settings and costs, not measured visual quality or speed. In one product-image-to-video run on 2026-08-25, the Nano Banana special channel generated a 1:1 product image for 20 credits in about half a minute. Veo 3.1 Fast then generated a 4-second, 720p, 16:9 clip with audio for 600 credits in about a minute. The total was 620 credits. This is one historical observation, not a current quote or a cross-model performance result.
Read the workflow and test context
For your own comparison, keep inputs and prompts fixed and record the model, channel, settings, date, actual credits and elapsed time. Evaluate cost calculations separately from generated results.
Fix one product image you have permission to use, a prompt, aspect ratio and resolution. Select Nano Banana Pro and the exact GPT Image 2.5 entry, review credits, then run. Define product shape, marks and colors to preserve as acceptance criteria, not generation guarantees.
For multiple references, confirm both entries accept the same count. Do not rank the base 2.5 entry using an input set it cannot accept. Record deployment, channel, settings, date, actual credits, retries and outputs, then review text, shape, color and the accepted-image rate.
Cost per accepted image = actual total credits charged divided by accepted images. If none pass, record spend and revise inputs instead of reporting zero cost. Both models use RelayMe credits, without separate provider accounts.
Start with one image. Video generation needs more credits; check prices before continuing. No credit card required · 1,000 credits ≈ US$1
Compare matching resolution and channel. Base 2.5 sale 1K / 2K / 4K is 60 / 80 / 100 credits; Nano Banana Pro sale is 90 / 100 / 180. A dash means no catalog quote for that channel or tier, not free generation.
They are separate deployments. The reference limits are 14 for Flare, 14 for Sunburst and 5 for base 2.5. See the table for configured resolutions and channel prices. Names alone do not establish visual quality, speed or an official provider version.
They are separate RelayMe catalog entries. Legacy GPT Image 2 stays in the last column; its channels, reference limits and prices must not be applied to 2.5. This page does not provide a controlled visual or speed benchmark of the two.
The catalog currently lists Nano Banana Pro: 1K / 2K / 4K; base 2.5: 1K / 2K / 4K. A 4K setting does not guarantee detail quality or product fidelity.
Base 2.5 allows up to 5; Nano Banana Pro, Flare and Sunburst list 14, 14 and 14 respectively. Check the selected channel; more references do not prove better consistency.
Yes, legacy GPT Image 2 remains a separate column. The 2K sale rates are 90 credits for GPT Image 2 and 100 for Nano Banana Pro; at 4K they are 100 and 180 respectively.
