- Added
eleven_v3andeleven_v4text-to-speech API references, audio task polling, and the audio model guide. - Added Audio pricing, including provider-reported character-cost billing.
- Added
Kling4.0andgemini-omni-1.2-flashto the video model guide, API reference, and pricing; refreshed the chat model catalog and pricing. - Corrected token-based starting-price units to USD per 1M tokens and refreshed billable-item pricing.
- Replaced unavailable
gpt-5.3-codexexamples and marked the historical Sora 2 reference as unavailable.
- Added
gpt-image-2.6-flare,gpt-image-2.6-sunburst, andgrok-imagine-image-2.0to the image API Reference and model catalog. - Added
gpt-6.1-terra,gemini-4-argon,kimi-k3.1-pro, andglm-5.3-flashto the Chat model catalog;gpt-6.1-terrais also listed for Responses. - Refreshed request parameters and public pricing, including Seedream 5.0 Pro layer decomposition and transparent backgrounds, Gemini image aspect ratios, and video input limits.
- Removed
sora-2from current model recommendations because it is no longer returned by the public model catalog. Its historical API Reference remains available; the first-call example now usesseedance-2-0.
- Updated Chat Completions, Responses, Anthropic Messages, and Gemini GenerateContent error schemas to use their protocol-specific
errorenvelopes and HTTP error statuses. - Added error handling guidance for balance and API key quota failures, upstream failures, and errors after SSE streaming starts.
- Clients using top-level
code/msgfor these compatibility endpoints should migrate to protocol error fields. Task-based generation APIs retain their endpoint-specific contracts.
- Added the OpenAI Decisions API reference for
gpt-6-luna, including predicate, choice, and score questions, per-question refusals, and token usage. - Updated the model catalog with Decisions endpoint support and clarified that its input and cache rates follow standard Luna pricing while output tokens are not charged under OpenAI’s Decisions pricing rules.
New models
- gemini-omni-flash-preview adds Google’s preview multimodal video generation model through
POST /videos/generations. - Added
grok-4.5andgrok-4.6to the Chat model catalog. - Updated Video pricing and Chat pricing for these models.
Image parameter updates
gemini-nano-banana-2.1now lists aspect ratios inWxHform, such as21x9and9x16, matching the current upstream schema.gpt-image-2.5-flareandgpt-image-2.5-sunburstnow list the upstreamsizepresets andautooption.
New image model
- gemini-nano-banana-2.1 adds image generation and conversational editing with 1K–4K output, multi-image references, and search grounding.
- Updated Image pricing with the new model’s token rates.
Chat catalog refresh
- Added
gpt-6.1-sol,gemini-3.8-flash,claude-haiku-5-5, andclaude-sonnet-5-5to Models and Chat pricing. - Removed
gpt-5.3-codexfrom the catalog and pricing page because it is no longer returned by the public sources; refreshed the Responses API model example. - Removed the zero-price placeholder from the MiniMax-H3 API description.
New video model
- wan3.0-video adds Alibaba audiovisual generation with text-to-video, first/last-frame image-to-video, up to 1080P and 30-second output, and optional synchronized audio.
- Video pricing is billed by generated milliseconds and varies by resolution; see Video pricing for the current rates.
Chat catalog refresh
- Added
gpt-6-luna,gpt-6-sol,claude-fable-5,claude-fable-5-1,claude-opus-5,claude-opus-5-5, andclaude-sonnet-5. - Removed
gemini-2.5-pro, which is no longer returned by the current public model catalog. - Refreshed Chat pricing for the updated catalog.
Schema updates
modelis now explicitly required forgemini-2.5-flash-image,seedance-2-0, andwan2.6.gpt-image-2.5-flareandgpt-image-2.5-sunburstno longer document the unsupportedresponse_formatfield.
GPT Image 2 schema update
- gpt-image-2 now documents
extends.edit.maskfor local image editing; transparent mask areas are regenerated and the field is used together withimages. - The unified image-generation endpoint continues to require
modelas its routing key.
Gemini video understanding
- Added a video understanding with Gemini guide covering upload session creation, direct file upload, processing status, native
generateContent, and cleanup. - Added API Reference pages for the Gemini-only file lifecycle and native multimodal request.
- Gemini file URIs are not reusable across OpenAI, Anthropic, generation, or compatibility endpoints.
- Validated the workflow end to end with
gemini-3.1-flash-liteand added portable filenames, complete upload headers, gateway error details, and automatic cleanup guidance.
New image models
- gpt-image-2.5-sunburst — precision-focused image generation and editing with up to 16 reference images, mask-guided edits, custom dimensions, and transparent backgrounds.
- gpt-image-2.5-flare — fast image generation and editing with the same reference-image, mask, custom-size, quality, and transparent-output controls.
- Both models support text-to-image and image-to-image workflows through
POST /v1/images/generations; cached text input starts at $0.9375 / 1M tokens.
Catalog and pricing updates
- Added
gpt-6-astrato the Chat model catalog and pricing page. - gemini-3.1-flash-lite-image — starting price drops from 0.25 → 0.1875 USD / token.
- Removed
sora-2from the video pricing table because it is no longer returned by the current public pricing source; its API Reference page remains available.
New video models
- seedance-2-0-fast — adds a low-latency Seedance option for 4–15 second multimodal video generation, with image, video, and audio references.
- seedance-2-0-mini — adds a lightweight Seedance option for high-volume video generation and editing workflows.
Updated schemas and model catalog
- seedance-2-5 — intelligent duration (
-1) is now the default; reference inputs are exposed consistently asimages,videos, andaudios. - MiniMax-Hailuo-02 —
promptis now optional, matching image-conditioned generation workflows. - Added
glm-5.2andglm-5.3to the current Chat model catalog. - Removed the stale
gemini-3-pro-image-previewandgemini-3.1-flash-image-previewpages because these models are no longer returned by the public catalog.
NewChanged
New resource-oriented image and video REST endpoints are now the recommended integration path
Resource-oriented generation API
- Use
POST /v1/images/generationsandGET /v1/images/generations/{task_id}for image generation. - Use
POST /v1/videos/generationsandGET /v1/videos/generations/{task_id}for video generation. - Use public
GET /v1/modelsto discover the currently visible model catalog without a Bearer API key. - Existing
/v1/image-generation,/v1/video-generation, and historical query routes remain supported. See Legacy API compatibility for the complete mapping. - Output asset URLs are dynamically signed. Avoid long-term URL caching, and do not blindly retry create requests after an uncertain timeout.
Model catalog sync
- Added
gemini-3-pro-image,gemini-3.1-flash-image, andMiniMax-H3from the current upstream catalog. - Removed the stale
seedance-v1.5-proreference because it is no longer returned by the visible model source. - Refreshed starting prices for
seedream-4.5(0.029040 USD/image),seedream-5.0-lite(0.030305 USD/image),seedream-5.0-pro(0.045000 USD/call), andwan2.6(0.304850 USD/call).
Seedance 2.0 schema update
- seedance-2-0 — adds an
imagesarray with up to 9 reference inputs. promptnow accepts up to 2,500 characters, reduced from 5,000. Update clients that validate or send longer prompts.
New model
- seedance-2-5 — ByteDance’s Seedance 2.5 supports text-to-video and image-to-video generation up to 30 seconds, synchronized audio, and image, video, or audio references through the unified video generation API. Starting from 6.08 USD / token.
Seedance 2.0 parameter update
- seedance-2-0 —
promptnow accepts up to 5,000 characters. durationnow supports 14s and 15s generations.resolutionnow includes1080Pand4Koptions.promptis no longer marked as required, matching image-to-video and media-conditioned workflows.
Schema upgrade — richer model parameter docs
Model parameter schemas now come from a more structured upstream source. As a result, every image / video endpoint now ships with:- Enum dropdowns for
size,resolution,quality— Playground renders select boxes instead of free-text inputs. - Default values shown next to each field (e.g.
seedance-2-0.resolutiondefaults to720P). - Conditional rules spelled out where they apply — e.g. on minimax-hailuo-02 the
resolutionfield now documents the three rules that constrain it (duration, first_frame_image, last_frame_image). - Field ordering reflects how parameters are typically filled in, not alphabetical.
- gpt-image-2 — previously missing the required
modelfield in the schema; now present.
Chat endpoints — removed unsupported params
temperature, top_p, and top_k have been removed from both /chat/completions and /messages. Claude 4.x rejects these parameters with HTTP 400 — documenting them was misleading. The final accepted parameter sets:- OpenAI Chat Completions:
model,messages,stream,max_tokens,stop - Anthropic Messages:
model,messages,max_tokens,system,stream,stop_sequences
Docs site refresh
Visual overhaul to match standard dev-docs density — switched to Mintlify’smaple theme (three-column layout with persistent code panel on endpoint pages), DM Sans typography, tighter body and sidebar sizing.Pricing updates
- kling-v3 — starting price drops from 0.0740 → 0.0610 USD / second (~17.6% lower).
gemini-3.1-flash-image-preview— starting price adjusted to 0.0503 USD / call (was 0.0500). This historical preview model is no longer available.- gpt-image-2 — starting price now listed: 0.9375 USD / token.
- seedance-2-0 — starting price now listed: 3.87 USD / token.
New model
- happyhorse-1.0 — Alibaba’s HappyHorse 1.0, supporting both text-to-video and image-to-video through
POST /v1/video-generation. Starting from 0.1158 USD / second.
Updated models
- gpt-image-2 — now accepts up to 10 reference
imagesfor image-to-image. - seedance-2-0 — adds new
audios,first_frame_image,last_frame_image, andvideosinputs.
Heads up — API base URL changed
The production base URL is nowhttps://api.linkmodel.ai/api/v1 (previously api.linkmodel.ai). Update your clients accordingly; the previous host will be retired.New models
- gpt-image-2 — OpenAI’s next-gen image model, now available through the unified
POST /v1/image-generationendpoint. - seedance-2-0 — Bytedance Seedance 2.0, available through
POST /v1/video-generation.
Other updates
- Pricing — kling-v3 now bills per second of generated video instead of per call.
- Changed — sora-2 now accepts a
resolutionparameter. Minor field-description refreshes on the historicalgemini-3-pro-image-previewmodel, kling-v3, and minimax-hailuo-02.
Introducing LinkModel
One API for image and video generation. Save up to 30% versus official pricing.LinkModel is now publicly available. Use a single Bearer-token API to access 12 generative models from OpenAI, Google, MiniMax, Kling, Bytedance, and Alibaba — without rewriting client code per provider.What’s available today
- 6 video models — Sora 2, Kling v3, MiniMax Hailuo 2.3, MiniMax Hailuo 02, Wan 2.6, Seedance v1.5 Pro
- 6 image models — Gemini 3.1 / 3 Pro / 2.5 Flash, Seedream 4.0 / 4.5 / 5.0 Lite
- Two unified endpoints —
POST /v1/video-generationandPOST /v1/image-generation - One response envelope —
{ code, data, msg, request_id }across all endpoints
Get started
- Create an API key in your Dashboard
- Browse all models, or jump into the API Reference
- Copy any endpoint’s cURL example, drop in your key, and run