ChatGPT Image Latest (API-Alias)vs.SANA-1.5 1.6B 1024px
Which one is better?
In our own test, ChatGPT Image Latest (API-Alias) leads. Neither is in the arena. Neither has an API price.
Test images
Same task, the first image of each. The task with the biggest difference is preselected.
Result for “Infographic”:ChatGPT Image Latest (API-Alias) ahead
What the rating looks at: Numbers, labels, and visual organization.
“Ahead”: better in all three rating rounds. “Slightly ahead”: a higher value, but not in every round.
Test protocol of the images
Each test attempt uses the same archived prompt and one request. The first output of that attempt counts. Repeats after technical test failures are disclosed for the affected images. Files are normalized to 1,024 × 1,024 pixels without cropping. Provider resolution, randomness, quality tier and prompt processing can still differ. The images are a practical visual test, not a reconstruction of the arena configuration.
Character and detail
ChatGPT Image Latest (API-Alias): openai, 1024x1024, quality high, n=1, generated Nov 2, 2026, 3:07 PM. Source
SANA-1.5 1.6B 1024px: manual, local PyTorch 2.13.0, Diffusers 0.36.0; Efficient-Large-Model/SANA1.5_1.6B_1024px_diffusers@b77948f2b4eed5c728e9b828ccff07f7427b43cc; native 1024x1024, 1:1; one request, first output; steps=20, guidance=4.5, seed=4913908686846438154; mps for text encoder and denoising; cpu for native VAE decode; bfloat16 for text encoder and transformer; float32 for VAE; native prompt preprocessing lowercases input; optional instruction disabled, generated Nov 2, 2026, 5:32 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: 985a75b38642a9f0e5e0c0e0c67f1b7f67780d42bd2168fa24e9a7a7a94b0da6
ChatGPT Image Latest (API-Alias) image SHA 256: 138ee96636b4fae17774b98bc6253f8dab595f4763ab90dd069ac6883c3f392e
SANA-1.5 1.6B 1024px image SHA 256: abc8d1fcb514ea7754211b79030abbf92ef83a61e546f19b217ccb06df0aaf45
Infographic
ChatGPT Image Latest (API-Alias): openai, 1024x1024, quality high, n=1, generated Nov 2, 2026, 3:07 PM. Source
SANA-1.5 1.6B 1024px: manual, local PyTorch 2.13.0, Diffusers 0.36.0; Efficient-Large-Model/SANA1.5_1.6B_1024px_diffusers@b77948f2b4eed5c728e9b828ccff07f7427b43cc; native 1024x1024, 1:1; one request, first output; steps=20, guidance=4.5, seed=1936313402304398258; mps for text encoder and denoising; cpu for native VAE decode; bfloat16 for text encoder and transformer; float32 for VAE; native prompt preprocessing lowercases input; optional instruction disabled, generated Nov 2, 2026, 5:33 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: ed65cb4e6a51e2336f8b149ad4cbb16e020f07d527ad94362e719d2dcf91d94f
ChatGPT Image Latest (API-Alias) image SHA 256: 3ed35c9539f9e2df404a219548c778a92ac0ee3e39a9a1c7f0bab3ee179165bb
SANA-1.5 1.6B 1024px image SHA 256: 828815adaab125d67312b64061f9b5a448558e9ac56ec9aa5ce8cf00cb63c481
Product photography
ChatGPT Image Latest (API-Alias): openai, 1024x1024, quality high, n=1, generated Nov 2, 2026, 3:06 PM. Source
SANA-1.5 1.6B 1024px: manual, local PyTorch 2.13.0, Diffusers 0.36.0; Efficient-Large-Model/SANA1.5_1.6B_1024px_diffusers@b77948f2b4eed5c728e9b828ccff07f7427b43cc; native 1024x1024, 1:1; one request, first output; steps=20, guidance=4.5, seed=1353667313865032696; mps for text encoder and denoising; cpu for native VAE decode; bfloat16 for text encoder and transformer; float32 for VAE; native prompt preprocessing lowercases input; optional instruction disabled, generated Nov 2, 2026, 5:32 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: c67fd71e91304458a2feef5c91efa8677260fab0c0099a29a2c52cb579f5b2f3
ChatGPT Image Latest (API-Alias) image SHA 256: c500c50a82c3c34b0caefcf73f08258fae3964682dafbee4737ac45855d14ee6
SANA-1.5 1.6B 1024px image SHA 256: a43c512ad071c0d7526e16f69874b653f073c532403114299c8fde43770a72c8
Typography and layout
ChatGPT Image Latest (API-Alias): openai, 1024x1024, quality high, n=1, first output of one technical repeat after a local archive failure; two total submissions; the original attempt output was not retained, generated Nov 2, 2026, 3:06 PM. Source
SANA-1.5 1.6B 1024px: manual, local PyTorch 2.13.0, Diffusers 0.36.0; Efficient-Large-Model/SANA1.5_1.6B_1024px_diffusers@b77948f2b4eed5c728e9b828ccff07f7427b43cc; native 1024x1024, 1:1; one request, first output; steps=20, guidance=4.5, seed=2028788407160516328; mps for text encoder and denoising; cpu for native VAE decode; bfloat16 for text encoder and transformer; float32 for VAE; native prompt preprocessing lowercases input; optional instruction disabled; two submissions: first attempt produced no image after a documented MPS VAE decoding crash; technical repeat kept the same prompt and seed, generated Nov 2, 2026, 5:31 PM. Source
Protocol gradually-image-comparison-v1. Prompt SHA 256: 2e012c3d14ee5dd02203a94f394ca80a5038cdebd6032b25a8b8a221f2255419
ChatGPT Image Latest (API-Alias) image SHA 256: 503ffd644f74423e8fdf617a2d8984f43f68fd87e287e4a3a94cec89c9666288
SANA-1.5 1.6B 1024px image SHA 256: 7c58a1c863d5b8d22d06ed159b89aa64d13cf9a44f7b3d4871683f491f0bb75c
The numbers at a glance
ChatGPT Image Latest (API-Alias)
not in the arena
SANA-1.5 1.6B 1024px
not in the arena
ChatGPT Image Latest (API-Alias)
Rank 25 of 108
SANA-1.5 1.6B 1024px
Rank 107 of 108
ChatGPT Image Latest (API-Alias)
no API price
SANA-1.5 1.6B 1024px
no API price
Ranks among the 21 image models with an arena rating and the 108 with a GraduallyBench run; prices compared with 28 models with an API price.
ChatGPT Image Latest (API-Alias)
- Subscription
- n/a No plan in Germany names exactly this model.
- Via API
- No API price known. Access: API.
- Weights
- unknown.
SANA-1.5 1.6B 1024px
- Subscription
- n/a No plan in Germany names exactly this model.
- Via API
- No API price known. Access: local.
- License
- Open weights.
Subscriptions only count plans that name exactly this model. Subscription prices include VAT, API prices are in dollars.
GraduallyBench from Nov 3, 2026 · Subscription database from Sep 29, 2026 (38 days old)
All data side by side
The better value is bold. For ratings only when the gap is clear.
| Kennzahl | ChatGPT Image Latest (API-Alias) | SANA-1.5 1.6B 1024px |
|---|---|---|
| Ratings | ||
| Arena ratingfrom votes by users, higher is better | n/a | n/a |
| Arena rank | n/a | n/a |
| Arena votesmore votes, a safer rating | n/a | n/a |
| GraduallyBenchour own rating, 0 to 100 | 69 | 4 |
| GraduallyBench by task | ||
| Typography and layoutLegible text, hierarchy, and composition | 68 | 3 |
| Product photographyMaterials, reflections, and fine details | 69 | 0 |
| Character and detailAnatomy, clothing, and spatial consistency | 57 | 4 |
| InfographicNumbers, labels, and visual organization | 83 | 7 |
| API price | ||
| Per imagelower is better | n/a | n/a |
| 100 images | n/a | n/a |
| Profile | ||
| Released | n/a | Mar 16, 2025 |
| Weightsopen means: runs locally | unknown | open |
| Lifecycle | Deprecated, non-reproducible rolling alias; API shutdown announced for December 1, 2026 | no notice |
| Access | API | local |
| Parameters | not published | 1.6 billion |
| Largest output | not consistently published | not consistently published |
| Plans in Germanynaming exactly this model | n/a | n/a |
API prices for one image at 1,024 × 1,024 pixels according to Artificial Analysis.
Sources: ChatGPT Image Latest (API-Alias) model source, status source (verified Nov 1, 2026) · SANA-1.5 1.6B 1024px model source (verified Nov 1, 2026)
Arena ratings by category
From blind votes on LMArena. “Ahead” means the lead is clear.
No shared arena score in the stored snapshot
The stored benchmark database contains no measurement for ChatGPT Image Latest (API-Alias) and SANA-1.5 1.6B 1024px from the same arena and category. Older model versions are not used as substitutes.
More comparisons
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