> ## Documentation Index > Fetch the complete documentation index at: https://docs.apiyi.com/llms.txt > Use this file to discover all available pages before exploring further. # Seedream 5.5 Pricing & Test Results - APIYI > Seedream 5.5 (seedream-5-5-261028) pricing and measured APIYI charges: $0.008 per input image, $0.020 per 1K/1.5K output, $0.035 per 2K output, and effective costs as low as 83% with recharge bonuses. ## Seedream 5.5 Pricing `seedream-5-5-261028` is served through the **official BytePlus channel**, with the same input-image and `1K` / `1.5K` / `2K` preset output prices as BytePlus. Savings come from APIYI's [recharge promotions](https://docs.apiyi.com/en/faq/recharge-promotions.md), not a modified model price. The highest public tier offers a 20% bonus, bringing the effective cash cost to about 83% of list price. > [card] Input references > > **\$0.008 / image** > > Billed by actual `input_images` > [card] Lower-pixel outputs > > **\$0.020 / image** > > 1K / 1.5K tiers > [card] Higher-pixel outputs > > **\$0.035 / image** > > 2K and exact-dimension tiers ### Unit Prices Matching the Official Rate Card BytePlus defines `P` as the **total pixel count of each output image** and prices every image separately. | Billing item | Output pixels / input type | APIYI unit price | | - | - | -: | | Input reference | Each successfully submitted input image | **\$0.008** | | Output · lower-pixel tier | 921,600 ≤ P ≤ 2,601,123.84, including 1K / 1.5K | **\$0.020 / image** | | Output · higher-pixel tier | 2,601,123.84 \< P ≤ 4,624,220.16, including 2K | **\$0.035 / image** | > [!NOTE] > > Model prices align with the official pricing and may change when the provider updates them. This table is for reference only; the **Model Pricing** tab in the top navigation is authoritative: [Model Pricing](https://docs.apiyi.com/en/models/index.md). > [!NOTE] > > **Current settlement behavior**: APIYI selects the price tier from the requested `size`. `1K` / `1.5K` costs \$0.020/image; `2K`, an omitted `size`, and exact `WxH` dimensions cost \$0.035/image. Input and output unit prices for standard presets match the official rate card; exact dimensions currently settle at the higher tier. The official pricing page is `docs.byteplus.com/en/docs/modelark/model-pricing`. ### Pricing Formula ```text theme={null} Total (USD) = input references × 0.008 + lower-pixel outputs × 0.020 + higher-pixel outputs × 0.035 ``` For one `2K` output with 2 reference images: ```text theme={null} 2 × 0.008 + 1 × 0.035 = 0.051 USD ``` ## Measured APIYI Charges These results come from live APIYI calls on 2026-11-13 (UTC+8). Amounts are differences in the test token's cumulative usage before and after each call, not estimates derived from the rate card. | Test case | Inputs | Outputs | Actual returned size / count | Measured charge | | - | -: | -: | - | -: | | `1K` text-to-image | 0 | 1 | `1248×832`, 1 image | **\$0.020** | | `2K` text-to-image | 0 | 1 | `2048×2048`, 1 image | **\$0.035** | | `1K` + 1 reference | 1 | 1 | `1024×1024`, 1 image | **\$0.028** | | `2K` + 2 references | 2 | 1 | `2368×1776`, 1 image | **\$0.051** | | Exact dimensions near the pixel ceiling | 0 | 1 | `2240×2064`, 1 image | **\$0.035** | | Exact dimensions at the 16:1 boundary | 0 | 1 | `8592×537`, 1 image | **\$0.035** | | `1K` layer decomposition capped at 3 | 1 | 2 | Base + 1 layer, both `1024×1024` | **\$0.048** | | `1K` + `n: 2` | 0 | 1 | `n` ignored; 1 image returned | **\$0.020** | > [!NOTE] > > Measured charges verify current billing behavior and are not a future price commitment. Model prices may change with the official rate card; see [Model Pricing](https://docs.apiyi.com/en/models/index.md). The layer-decomposition charge is: ```text theme={null} 2 outputs × 0.020 + 1 input × 0.008 = 0.048 USD ``` Invalid parameters and unsupported features do not produce images or image charges: | Test case | Result | Charge | | - | - | -: | | `2240x2065`, above 4,624,220 pixels | 400, pixel ceiling exceeded | \$0 | | `8593x537`, beyond the 16:1 aspect-ratio limit | 400, aspect ratio outside the allowed range | \$0 | | `sequential_image_generation: "auto"` | 400, unsupported by this model | \$0 | ## Effective Cost with Recharge Bonuses **Model prices match the official rate card; savings come from recharge promotions.** A bonus does not change the unit price in billing logs. It gives you more usable credit for the same cash payment. Once both the principal and bonus credit are spent, the effective cash cost is: ```text theme={null} Effective cash cost = logged amount / (1 + bonus percentage) ``` These examples use a `1K` text-to-image call at \$0.020 and a `2K` call at \$0.035, with no input references: | Single recharge | Bonus | Credited | Effective discount | 1K effective cost | 2K effective cost | | - | -: | -: | -: | -: | -: | | \$100 ≤ X \< \$500 | 10% | 1.10× | about 91% | about \$0.0182 | about \$0.0318 | | \$500 ≤ X \< \$1,000 | 12% | 1.12× | about 89% | about \$0.0179 | about \$0.0313 | | \$1,000 ≤ X \< \$3,000 | 15% | 1.15× | about 87% | about \$0.0174 | about \$0.0304 | | X ≥ \$3,000 | **20%** | **1.20×** | **about 83%** | **about \$0.0167** | **about \$0.0292** | For an example that includes input references, a `2K` request with 2 references logs \$0.051. With the 20% bonus tier, its effective cash cost is: ```text theme={null} 0.051 / 1.20 = 0.0425 USD ``` > [!NOTE] > > The bonus tier is based on each **single recharge amount**, not your cumulative total. Online payments and corporate transfers are both eligible. The highest public tier is 20%, equivalent to about 83% of list price. Accounts on custom negotiated pricing usually do not also receive recharge bonuses. See [Recharge Promotions](https://docs.apiyi.com/en/faq/recharge-promotions.md) for eligibility, distribution timing, and current rules. ## Billing Notes * **Standard generation returns one image**: `n: 2` is silently ignored and still returns and bills one image; `sequential_image_generation` returns 400. Make separate requests for multiple standard images. * **Layer decomposition bills actual returned images**: `layer_decomposition_options.max_images` is a ceiling, not a guaranteed count, and the single input reference is billed separately. * **Failed requests are not billed**: size violations, invalid parameters, and moderation rejections produced no image charges in our tests. * **Group ratios are separate**: prices in this page are official unit prices before group ratios. Recharge-bonus savings and token group ratios are different rules. ## Related Docs * [Seedream Overview](https://docs.apiyi.com/en/api-capabilities/seedream-image/overview.md) * [Seedream Text-to-Image Playground](https://docs.apiyi.com/en/api-capabilities/seedream-image/text-to-image.md) * [Seedream Image Editing and Layer Decomposition Playground](https://docs.apiyi.com/en/api-capabilities/seedream-image/image-edit.md) * [Recharge Promotions](https://docs.apiyi.com/en/faq/recharge-promotions.md) * [Model Pricing](https://docs.apiyi.com/en/models/index.md) This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.