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Image models compared

Nano Banana 2 vs Nano Banana Pro: the same prompts, side by side

Google's Nano Banana 2 and Google's Nano Banana Pro 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, Nano Banana 2 passed 14 and Nano Banana Pro 13, each image checked the same way. Nano Banana Pro was quicker, 36.2 s an image against 88.0 s. In llmwise a Nano Banana 2 image counts as 2 Claude Haiku 4.5 messages and a Nano Banana Pro image as 5 Claude Haiku 4.5 messages: up to 125 and 50 images a month on Pro.

Nano Banana 2 and Nano Banana Pro in llmwise

What llmwise asks Nano Banana 2 and Nano Banana Pro for, and what an image of each counts as.

Nano Banana 2 and Nano Banana Pro in llmwise
FactNano Banana 2Nano Banana Pro
Made byGoogleGoogle
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 messages5 Claude Haiku 4.5 messages
Images on Proup to 125 a monthup to 50 a month

Job by job

Nano Banana 2 passed 14 of 16 and Nano Banana Pro 13 of 16. A prompt passes when every piece of writing it asked for is there and every question about the image is a yes.

Nano Banana 2 and Nano Banana Pro, job by job
JobNano Banana 2Nano Banana Pro
Logos2 of 2 passed, 12 of 12 checks2 of 2 passed, 12 of 12 checks
Text in images2 of 2 passed, 14 of 14 checks1 of 2 passed, 13 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 checks1 of 2 passed, 10 of 11 checks
Illustrations2 of 2 passed, 10 of 10 checks2 of 2 passed, 10 of 10 checks
Portraits2 of 2 passed, 13 of 13 checks2 of 2 passed, 13 of 13 checks
YouTube thumbnails1 of 2 passed, 11 of 12 checks1 of 2 passed, 11 of 12 checks
Social media posts1 of 2 passed, 10 of 12 checks2 of 2 passed, 12 of 12 checks

The same prompts, side by side

Nano Banana 2's and Nano Banana Pro'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 Nano Banana 2 and Nano Banana Pro passed; Nano Banana Pro's image came 10.0 s sooner (38.6 s to 48.6 s), and Nano Banana 2's cost $0.050 less at kie.ai.

    Nano Banana 2Passed
    Nano Banana 2's image for “A coffee shop logo with its name”
      Nano Banana ProPassed
      Nano Banana Pro's image for “A coffee shop logo with its name”

      • A wheel and a wrench in one icon

        Both Nano Banana 2 and Nano Banana Pro passed; Nano Banana Pro's image came 81.0 s sooner (38.5 s to 119.5 s), and Nano Banana 2's cost $0.050 less at kie.ai.

        Nano Banana 2Passed
        Nano Banana 2's image for “A wheel and a wrench in one icon”
          Nano Banana ProPassed
          Nano Banana Pro's image for “A wheel and a wrench in one icon”

          • A bakery sign with two lines

            Only Nano Banana 2 passed, not Nano Banana Pro; Nano Banana Pro's image came 17.6 s sooner (31.0 s to 48.6 s), and Nano Banana 2's cost $0.050 less at kie.ai.

            Nano Banana 2Passed
            Nano Banana 2's image for “A bakery sign with two lines”
              Nano Banana ProFailed
              Nano Banana Pro's image for “A bakery sign with two lines”
              • Is the writing on the sign in two lines, one above the other? No: The writing is in four lines (FRESH, BREAD, DAILY, OPEN 7AM), not two.

            • A café menu board with four prices

              Both Nano Banana 2 and Nano Banana Pro passed; Nano Banana Pro's image came 12.5 s sooner (31.6 s to 44.1 s), and Nano Banana 2's cost $0.050 less at kie.ai.

              Nano Banana 2Passed
              Nano Banana 2's image for “A café menu board with four prices”
                Nano Banana ProPassed
                Nano Banana Pro's image for “A café menu board with four prices”

                • A white sneaker on a grey background

                  Both Nano Banana 2 and Nano Banana Pro passed; both images took about as long, and Nano Banana 2's cost $0.050 less at kie.ai.

                  Nano Banana 2Passed
                  Nano Banana 2's image for “A white sneaker on a grey background”
                    Nano Banana ProPassed
                    Nano Banana Pro's image for “A white sneaker on a grey background”

                    • A perfume bottle and its reflection

                      Both Nano Banana 2 and Nano Banana Pro passed; Nano Banana Pro's image came 8.3 s sooner (36.4 s to 44.6 s), and Nano Banana 2's cost $0.050 less at kie.ai.

                      Nano Banana 2Passed
                      Nano Banana 2's image for “A perfume bottle and its reflection”
                        Nano Banana ProPassed
                        Nano Banana Pro's image for “A perfume bottle and its reflection”

                        • A bowl of ramen from above

                          Both Nano Banana 2 and Nano Banana Pro passed; Nano Banana Pro's image came 109.0 s sooner (44.1 s to 153.1 s), and Nano Banana 2's cost $0.050 less at kie.ai.

                          Nano Banana 2Passed
                          Nano Banana 2's image for “A bowl of ramen from above”
                            Nano Banana ProPassed
                            Nano Banana Pro's image for “A bowl of ramen from above”

                            • A rainy street at night, one red umbrella

                              Only Nano Banana 2 passed, not Nano Banana Pro; Nano Banana Pro's image came 112.8 s sooner (31.3 s to 144.1 s), and Nano Banana 2's cost $0.050 less at kie.ai.

                              Nano Banana 2Passed
                              Nano Banana 2's image for “A rainy street at night, one red umbrella”
                                Nano Banana ProFailed
                                Nano Banana Pro's image for “A rainy street at night, one red umbrella”
                                • Is it night? No: The sky is overcast and light, so it looks like daytime or dusk with neon signs lit, not full night.

                              • A watercolour fox for a children's book

                                Both Nano Banana 2 and Nano Banana Pro passed; both images took about as long, and Nano Banana 2's cost $0.050 less at kie.ai.

                                Nano Banana 2Passed
                                Nano Banana 2's image for “A watercolour fox for a children's book”
                                  Nano Banana ProPassed
                                  Nano Banana Pro's image for “A watercolour fox for a children's book”

                                  • Three people at one laptop, flat vector

                                    Both Nano Banana 2 and Nano Banana Pro passed; Nano Banana Pro's image came 152.9 s sooner (30.7 s to 183.6 s), and Nano Banana 2's cost $0.050 less at kie.ai.

                                    Nano Banana 2Passed
                                    Nano Banana 2's image for “Three people at one laptop, flat vector”
                                      Nano Banana ProPassed
                                      Nano Banana Pro's image for “Three people at one laptop, flat vector”

                                      • A studio headshot

                                        Both Nano Banana 2 and Nano Banana Pro passed; Nano Banana Pro's image came 38.4 s sooner (28.1 s to 66.5 s), and Nano Banana 2's cost $0.050 less at kie.ai.

                                        Nano Banana 2Passed
                                        Nano Banana 2's image for “A studio headshot”
                                          Nano Banana ProPassed
                                          Nano Banana Pro's image for “A studio headshot”

                                          • A fisherman holding a rope in both hands

                                            Both Nano Banana 2 and Nano Banana Pro passed; Nano Banana Pro's image came 83.8 s sooner (33.4 s to 117.2 s), and Nano Banana 2's cost $0.050 less at kie.ai.

                                            Nano Banana 2Passed
                                            Nano Banana 2's image for “A fisherman holding a rope in both hands”
                                              Nano Banana ProPassed
                                              Nano Banana Pro's image for “A fisherman holding a rope in both hands”

                                              • A cooking video thumbnail

                                                Both Nano Banana 2 and Nano Banana Pro passed; Nano Banana 2's image came 12.8 s sooner (15.5 s to 28.3 s), and Nano Banana 2's cost $0.050 less at kie.ai.

                                                Nano Banana 2Passed
                                                Nano Banana 2's image for “A cooking video thumbnail”
                                                  Nano Banana ProPassed
                                                  Nano Banana Pro's image for “A cooking video thumbnail”

                                                  • A phone review thumbnail with a question

                                                    Neither Nano Banana 2 nor Nano Banana Pro passed; Nano Banana Pro's image came 158.7 s sooner (30.7 s to 189.4 s), and Nano Banana 2's cost $0.050 less at kie.ai.

                                                    Nano Banana 2Failed
                                                    Nano Banana 2's image for “A phone review thumbnail with a question”
                                                    • Is there only one piece of writing? No: Besides the large 'WORTH IT?' text, there are small app labels on the phone screen such as YouTube, Foto, Settings and Camera.
                                                    Nano Banana ProFailed
                                                    Nano Banana Pro's image for “A phone review thumbnail with a question”
                                                    • Is there only one piece of writing? No: Besides the large "WORTH IT?", the phone screen shows several small labels such as HDR, 4K, VIDEO and PHOTO.

                                                  • A summer sale post

                                                    Both Nano Banana 2 and Nano Banana Pro passed; Nano Banana Pro's image came 12.5 s sooner (43.5 s to 56.0 s), and Nano Banana 2's cost $0.050 less at kie.ai.

                                                    Nano Banana 2Passed
                                                    Nano Banana 2's image for “A summer sale post”
                                                      Nano Banana ProPassed
                                                      Nano Banana Pro's image for “A summer sale post”

                                                      • A book club announcement, top and bottom

                                                        Only Nano Banana Pro passed, not Nano Banana 2; Nano Banana Pro's image came 44.6 s sooner (40.8 s to 85.5 s), and Nano Banana 2's cost $0.050 less at kie.ai.

                                                        Nano Banana 2Failed
                                                        Nano Banana 2's image for “A book club announcement, top and bottom”
                                                        • Is there one line of writing at the top and one at the bottom? No: The top has two lines, 'BOOK' and 'CLUB', not one, and the bottom has one line, 'THURSDAY 7PM'.
                                                        • Apart from those two lines, is nothing else written? No: The book pages have tiny text and the tea bag tag has small writing, so there is more writing than the headline and the bottom line.
                                                        Nano Banana ProPassed
                                                        Nano Banana Pro's image for “A book club announcement, top and bottom”

                                                        More image models, compared

                                                        Questions

                                                        Is Nano Banana 2 better than Nano Banana Pro?

                                                        On our 16 image test prompts, Nano Banana 2 passed 14 and Nano Banana Pro 13, each image checked the same way. Nano Banana Pro was quicker, 36.2 s an image against 88.0 s. In llmwise a Nano Banana 2 image counts as 2 Claude Haiku 4.5 messages and a Nano Banana Pro image as 5 Claude Haiku 4.5 messages: up to 125 and 50 images a month on Pro.

                                                        Which is cheaper in llmwise, Nano Banana 2 or Nano Banana Pro?

                                                        Nano Banana 2: in llmwise its image counts as 2 Claude Haiku 4.5 messages, against 5 Claude Haiku 4.5 messages for Nano Banana Pro.

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