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Image models compared

FLUX.2 Pro vs Seedream 5.0 Lite: the same prompts, side by side

Black Forest Labs' FLUX.2 Pro and ByteDance's Seedream 5.0 Lite on the same 16 prompts, two for each of 8 jobs, from logos to YouTube thumbnails: each image as it was made, what the checks found, what it cost and how long it took.

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Based on 32 images made on September 29, 2026 through kie.ai with llmwise's own settings for each model, each checked by Claude Sonnet 5.5. How the images are checked.

Short answer

On our 16 image test prompts, FLUX.2 Pro and Seedream 5.0 Lite each passed 14, each image checked the same way. Seedream 5.0 Lite was quicker, 47.0 s an image against 60.7 s. In llmwise an image from either counts as 2 Claude Haiku 4.5 messages, up to 125 images a month on Pro.

FLUX.2 Pro and Seedream 5.0 Lite in llmwise

What llmwise asks FLUX.2 Pro and Seedream 5.0 Lite for, and what an image of each counts as.

FLUX.2 Pro and Seedream 5.0 Lite in llmwise
FactFLUX.2 ProSeedream 5.0 Lite
Made byBlack Forest LabsByteDance
Made throughkie.aikie.ai
Output size1K2K
Aspect ratiossquare 1:1, portrait 2:3, landscape 3:2square 1:1, portrait 2:3, landscape 3:2
An image counts as2 Claude Haiku 4.5 messages2 Claude Haiku 4.5 messages
Images on Proup to 125 a monthup to 125 a month

Job by job

FLUX.2 Pro passed 14 of 16 and Seedream 5.0 Lite 14 of 16. A prompt passes when every piece of writing it asked for is there and every question about the image is a yes.

FLUX.2 Pro and Seedream 5.0 Lite, job by job
JobFLUX.2 ProSeedream 5.0 Lite
Logos2 of 2 passed, 12 of 12 checks2 of 2 passed, 12 of 12 checks
Text in images2 of 2 passed, 14 of 14 checks2 of 2 passed, 14 of 14 checks
Product photos2 of 2 passed, 12 of 12 checks2 of 2 passed, 12 of 12 checks
Photorealistic images2 of 2 passed, 11 of 11 checks2 of 2 passed, 11 of 11 checks
Illustrations2 of 2 passed, 10 of 10 checks2 of 2 passed, 10 of 10 checks
Portraits1 of 2 passed, 12 of 13 checks1 of 2 passed, 12 of 13 checks
YouTube thumbnails2 of 2 passed, 12 of 12 checks2 of 2 passed, 12 of 12 checks
Social media posts1 of 2 passed, 11 of 12 checks1 of 2 passed, 11 of 12 checks

The same prompts, side by side

FLUX.2 Pro's and Seedream 5.0 Lite's image for each prompt, with each question either one was answered no on; a prompt's title links to it in full, with every answer.

  1. A coffee shop logo with its name

    Both FLUX.2 Pro and Seedream 5.0 Lite passed; Seedream 5.0 Lite's image came 14.9 s sooner (46.2 s to 61.1 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

    FLUX.2 ProPassed
    FLUX.2 Pro's image for “A coffee shop logo with its name”
      Seedream 5.0 LitePassed
      Seedream 5.0 Lite's image for “A coffee shop logo with its name”

      • A wheel and a wrench in one icon

        Both FLUX.2 Pro and Seedream 5.0 Lite passed; Seedream 5.0 Lite's image came 5.2 s sooner (43.4 s to 48.6 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

        FLUX.2 ProPassed
        FLUX.2 Pro's image for “A wheel and a wrench in one icon”
          Seedream 5.0 LitePassed
          Seedream 5.0 Lite's image for “A wheel and a wrench in one icon”

          • A bakery sign with two lines

            Both FLUX.2 Pro and Seedream 5.0 Lite passed; FLUX.2 Pro's image came 25.7 s sooner (18.0 s to 43.7 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

            FLUX.2 ProPassed
            FLUX.2 Pro's image for “A bakery sign with two lines”
              Seedream 5.0 LitePassed
              Seedream 5.0 Lite's image for “A bakery sign with two lines”

              • A café menu board with four prices

                Both FLUX.2 Pro and Seedream 5.0 Lite passed; FLUX.2 Pro's image came 56.4 s sooner (18.2 s to 74.6 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

                FLUX.2 ProPassed
                FLUX.2 Pro's image for “A café menu board with four prices”
                  Seedream 5.0 LitePassed
                  Seedream 5.0 Lite's image for “A café menu board with four prices”

                  • A white sneaker on a grey background

                    Both FLUX.2 Pro and Seedream 5.0 Lite passed; FLUX.2 Pro's image came 18.1 s sooner (23.2 s to 41.2 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

                    FLUX.2 ProPassed
                    FLUX.2 Pro's image for “A white sneaker on a grey background”
                      Seedream 5.0 LitePassed
                      Seedream 5.0 Lite's image for “A white sneaker on a grey background”

                      • A perfume bottle and its reflection

                        Both FLUX.2 Pro and Seedream 5.0 Lite passed; FLUX.2 Pro's image came 18.4 s sooner (23.4 s to 41.8 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

                        FLUX.2 ProPassed
                        FLUX.2 Pro's image for “A perfume bottle and its reflection”
                          Seedream 5.0 LitePassed
                          Seedream 5.0 Lite's image for “A perfume bottle and its reflection”

                          • A bowl of ramen from above

                            Both FLUX.2 Pro and Seedream 5.0 Lite passed; Seedream 5.0 Lite's image came 18.5 s sooner (46.6 s to 65.1 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

                            FLUX.2 ProPassed
                            FLUX.2 Pro's image for “A bowl of ramen from above”
                              Seedream 5.0 LitePassed
                              Seedream 5.0 Lite's image for “A bowl of ramen from above”

                              • A rainy street at night, one red umbrella

                                Both FLUX.2 Pro and Seedream 5.0 Lite passed; FLUX.2 Pro's image came 18.9 s sooner (18.4 s to 37.2 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

                                FLUX.2 ProPassed
                                FLUX.2 Pro's image for “A rainy street at night, one red umbrella”
                                  Seedream 5.0 LitePassed
                                  Seedream 5.0 Lite's image for “A rainy street at night, one red umbrella”

                                  • A watercolour fox for a children's book

                                    Both FLUX.2 Pro and Seedream 5.0 Lite passed; Seedream 5.0 Lite's image came 33.1 s sooner (57.4 s to 90.5 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

                                    FLUX.2 ProPassed
                                    FLUX.2 Pro's image for “A watercolour fox for a children's book”
                                      Seedream 5.0 LitePassed
                                      Seedream 5.0 Lite's image for “A watercolour fox for a children's book”

                                      • Three people at one laptop, flat vector

                                        Both FLUX.2 Pro and Seedream 5.0 Lite passed; Seedream 5.0 Lite's image came 81.2 s sooner (38.4 s to 119.6 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

                                        FLUX.2 ProPassed
                                        FLUX.2 Pro's image for “Three people at one laptop, flat vector”
                                          Seedream 5.0 LitePassed
                                          Seedream 5.0 Lite's image for “Three people at one laptop, flat vector”

                                          • A studio headshot

                                            Both FLUX.2 Pro and Seedream 5.0 Lite passed; FLUX.2 Pro's image came 20.3 s sooner (20.4 s to 40.7 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

                                            FLUX.2 ProPassed
                                            FLUX.2 Pro's image for “A studio headshot”
                                              Seedream 5.0 LitePassed
                                              Seedream 5.0 Lite's image for “A studio headshot”

                                              • A fisherman holding a rope in both hands

                                                Neither FLUX.2 Pro nor Seedream 5.0 Lite passed; FLUX.2 Pro's image came 22.8 s sooner (30.7 s to 53.5 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

                                                FLUX.2 ProFailed
                                                FLUX.2 Pro's image for “A fisherman holding a rope in both hands”
                                                • Does every hand you can see have five fingers and look natural? No: The hands are clasped and partly hidden by the rope, so the fingers are hard to count and some look slightly merged or unclear.
                                                Seedream 5.0 LiteFailed
                                                Seedream 5.0 Lite's image for “A fisherman holding a rope in both hands”
                                                • Does every hand you can see have five fingers and look natural? No: The fingers are mostly hidden or wrapped around the rope, so five fingers on each hand cannot be confirmed.

                                              • A cooking video thumbnail

                                                Both FLUX.2 Pro and Seedream 5.0 Lite passed; both images took about as long, and FLUX.2 Pro's cost $0.002 less at kie.ai.

                                                FLUX.2 ProPassed
                                                FLUX.2 Pro's image for “A cooking video thumbnail”
                                                  Seedream 5.0 LitePassed
                                                  Seedream 5.0 Lite's image for “A cooking video thumbnail”

                                                  • A phone review thumbnail with a question

                                                    Both FLUX.2 Pro and Seedream 5.0 Lite passed; FLUX.2 Pro's image came 17.7 s sooner (23.0 s to 40.7 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

                                                    FLUX.2 ProPassed
                                                    FLUX.2 Pro's image for “A phone review thumbnail with a question”
                                                      Seedream 5.0 LitePassed
                                                      Seedream 5.0 Lite's image for “A phone review thumbnail with a question”

                                                      • A summer sale post

                                                        Both FLUX.2 Pro and Seedream 5.0 Lite passed; Seedream 5.0 Lite's image came 128.4 s sooner (45.9 s to 174.4 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

                                                        FLUX.2 ProPassed
                                                        FLUX.2 Pro's image for “A summer sale post”
                                                          Seedream 5.0 LitePassed
                                                          Seedream 5.0 Lite's image for “A summer sale post”

                                                          • A book club announcement, top and bottom

                                                            Neither FLUX.2 Pro nor Seedream 5.0 Lite passed; Seedream 5.0 Lite's image came 137.5 s sooner (38.8 s to 176.2 s), and FLUX.2 Pro's cost $0.002 less at kie.ai.

                                                            FLUX.2 ProFailed
                                                            FLUX.2 Pro's image for “A book club announcement, top and bottom”
                                                            • Apart from those two lines, is nothing else written? No: The book's pages contain small lines of text and page numbers, so other writing appears in the image, though it is illegible.
                                                            Seedream 5.0 LiteFailed
                                                            Seedream 5.0 Lite's image for “A book club announcement, top and bottom”
                                                            • Apart from those two lines, is nothing else written? No: The book's pages show tiny, unreadable text-like marks, so the image contains more than those two lines.

                                                          More image models, compared

                                                          Questions

                                                          Is FLUX.2 Pro better than Seedream 5.0 Lite?

                                                          On our 16 image test prompts, FLUX.2 Pro and Seedream 5.0 Lite each passed 14, each image checked the same way. Seedream 5.0 Lite was quicker, 47.0 s an image against 60.7 s. In llmwise an image from either counts as 2 Claude Haiku 4.5 messages, up to 125 images a month on Pro.

                                                          Which is cheaper in llmwise, FLUX.2 Pro or Seedream 5.0 Lite?

                                                          Neither: in llmwise an image from either counts as 2 Claude Haiku 4.5 messages.

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