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Model 1

Model 2

Comparison	Seedream 5 Pro `seedream-5-pro`	Choose model 2
Type	Image	—
Best for	Poster-style images and reference-guided edits with up to 10 ordered references	—
TokenRex price	$0.0315 per image	—
Cached input / 1M tokens	No separate cached rate listed	—
Cache write / 1M tokens	Not applicable	—
Cached output	Not offered · standard output rate applies	—
Web search	Not applicable	—
Market price	$0.045 per image	—
Input token limit (provider)	Within the context window	—
Vendor input modalities	Text, Image	—
Vendor output modalities	Image (JPEG)	—
TokenRex endpoints	POST /v1/images/generations · POST /v1/images/edits	—
TokenRex input	Prompt (required), Up to 10 ordered reference images (URL or data URL), Size 1K, 2K or WIDTHxHEIGHT, Watermark on or off	—
TokenRex output	One JPEG as base64	—
Images per request	Exactly one	—
Reference images	1–10, order preserved	—
Sizes	1K, 2K or WIDTHxHEIGHT	—
Streaming	Completed image only (image_generation.completed)	—
Benchmarks
Benchmark evidence	1 source-linked results	—
AA-Image-T2I	1102Elo Listed as Seedream 5.0 Pro. Pairwise blind human-preference Elo, ±11 (95% interval 1091–1113), 12,137 votes; 20th overall when checked. Not a TokenRex run. Artificial Analysis · Text-to-Image Arena	—

No overall score, winner or cost-versus-score frontier is calculated without comparable, attributable benchmark evidence. Different test configurations appear separately. Vendor capabilities are distinct from TokenRex API support.

— means no published value or no matching capability. Provider token limits are not tested gateway guarantees; TokenRex media controls and response formats are listed separately.

Seedream 5 Pro

Sources and verification

Provider specifications describe the upstream model, not a guarantee of every feature through TokenRex. Prices come from the enabled catalog; benchmark results belong to the exact tested model.

TokenRex video and image API documentation
Vendor-reported
Last checked 2026-11-11
Cloudflare Workers AI: ByteDance Seedream 5 Pro
Vendor-reported
Last checked 2026-11-11
Lovable AI images documentation
Vendor-reported
Last checked 2026-11-11

Research notes (3)

Functional test through TokenRex (2026-11-11): a 1K text-to-image request returned an 832×1248 JPEG poster with the requested headline, and a one-reference edit returned the edited JPEG. These are working checks, not quality benchmarks.
1K and 2K set the output scale and are not exact squares; a custom WIDTHxHEIGHT size such as 1536x864 is accepted.
Quality, masks, transparency, output format, seed, negative prompts and multiple outputs are not supported and are refused.

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