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ByteDanceRunwayImage model matchup

Seedream 5.0 Flashvs.Runway Gen-4 Image Turbo

Which one is better?

We have not tested Runway Gen-4 Image Turbo ourselves yet. Neither is in the arena. Neither has an API price.

GraduallyBench Image v2Our own benchmark0 to 100 · higher is better
78

Seedream 5.0 Flash

Rank 13 of 108

n/a

Runway Gen-4 Image Turbo

not tested yet

Ranks among the 21 image models with an arena rating and the 108 with a GraduallyBench Image v2 run; prices compared with 28 models with an API price.

Test images from GraduallyBench Image v2

Our own benchmarkThe images come from GraduallyBench Image v2, our own benchmark: every model gets the same four tasks, and two AI judges compare the images in pairs and blind.

Same task, the first image of each.

Seedream 5.0 Flash: Typography and layout, first image from the fixed test run
Seedream 5.0 Flash69 out of 100

No image from the four fixed tasks for Runway Gen-4 Image Turbo yet.

Runway Gen-4 Image Turbonot tested yet

Result for “Typography and layout”:only Seedream 5.0 Flash tested

Prompt given to both modelsCreate a square editorial poster for an imaginary night train called MONDFALTER. Show the exact German headline MONDFALTER and the exact subline BERLIN NACH LISSABON. Use a restrained midnight-blue and warm-cream palette, one stylized moth, strong Swiss-grid typography, generous negative space, and no additional words or logos.

What the rating looks at: Legible text, hierarchy, and composition.

“Ahead”: the 95 % ranges of both values do not overlap. “Slightly ahead”: a higher value, but the ranges overlap.

Missing image run for Runway Gen-4 Image Turbo

The password for the existing Runway account was unavailable. We could not verify whether this model is selectable on the free plan. Last checked November 2, 2026. Resolve account access and check model availability on the free plan.

Documentation

Subscription and API

Seedream 5.0 Flash

Subscription
No ByteDance subscription includes this model. Through other providers from $4.99 a month (Poe Basic, with limited points). 18 plans in Germany.
Via API
No API price known (access: API).
Weights
Unknown.

Runway Gen-4 Image Turbo

Subscription
No Runway subscription includes this model. Through other providers from $6 a month (ElevenLabs Starter, with limited credits). 7 plans in Germany.
Via API
No API price known (access: API, Web app).
Weights
Unknown.

Subscriptions only count plans that name exactly this model. Subscription prices include VAT, API prices are in dollars.

GraduallyBench Image v2 from Nov 7, 2026 · Subscription database from Sep 29, 2026 (45 days old)

All data side by side

The better value is bold. For ratings only when the gap is clear.

KennzahlSeedream 5.0 FlashRunway Gen-4 Image Turbo
Ratings
Arena ratingfrom votes by users, higher is bettern/an/a
Arena rankn/an/a
Arena votesmore votes, a safer ratingn/an/a
GraduallyBench Image v2our own benchmark, 0 to 10078n/a
GraduallyBench Image v2 by task
Typography and layoutLegible text, hierarchy, and composition69n/a
Product photographyMaterials, reflections, and fine details68n/a
Character and detailAnatomy, clothing, and spatial consistency88n/a
InfographicNumbers, labels, and visual organization86n/a
API price
Per imagelower is bettern/an/a
100 imagesn/an/a
Profile
Releasedn/an/a
Weightsopen means: runs locallyunknownunknown
AccessAPIAPI, Web app
Parametersnot publishednot published
Largest outputnot consistently publishednot consistently published
Plans in Germanynaming exactly this model187

API prices for one image at 1,024 × 1,024 pixels according to Artificial Analysis.

Sources: Seedream 5.0 Flash model source (verified Nov 1, 2026) · Runway Gen-4 Image Turbo model source (verified Nov 1, 2026)

Arena ratings by category

From blind votes on Artificial Analysis and LMArena; the sources are named under the card. “Ahead” means the lead is clear.

No shared arena score in the stored snapshot

The stored benchmark database contains no measurement for Seedream 5.0 Flash and Runway Gen-4 Image Turbo from the same arena and category. Older model versions are not used as substitutes.

More comparisons

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