AI Model Market
Browse every available AI model, compare pricing and capabilities, and integrate in minutes. Currently offering 26 models, with more added continuously.
Chat
Gemini
Google
Gemini 3.1 Pro
Gemini 3.1 Pro is the next-generation flagship multimodal model from Google, with a very long context window and top-tier reasoning and coding. Fully OpenAI-API compatible: set model to gemini-3.1-pro in your existing SDK. Low-reasoning tier by default (faster and cheaper); pass reasoning_effort=high for the high tier (billed at the Preview rate). Responses carry a reasoning_content field so you can see the thinking (streamed chunk by chunk as well).
Gemini 3.8 Flash
Gemini 3.8 Flash is the latest Flash generation from Google (released September 2026), built for long-running coding, agent workflows and complex reasoning: 1M-token context, up to 64K output, image input. It uses a dynamic thinking budget -- quick answers for simple questions, more thinking for hard ones. Fully OpenAI-API compatible: set model to gemini-3.8-flash.
Gemini 4 Argon
Gemini 4 Argon Beta: three thinking levels and a shared million-token context
Claude
Anthropic
Claude Opus 5.5
Claude Opus 5.5 is the newest model in Anthropic's Opus line and the successor to Claude Opus 5, built for long-horizon agentic coding and knowledge work: a 1M-token context window, up to 128K output tokens per request, and adaptive thinking that is always on. It supports image input, tool calling, prompt caching and streaming. KovAPI serves it through both the OpenAI-compatible API and the native Anthropic Messages API (/anthropic), so Claude Code connects directly; the five effort levels (low to max), thinking summaries, structured output and PDF input are available on the native API. Pay as you go; failed calls are never billed.
Claude Sonnet 5.5
Claude Sonnet 5.5 is the newest model in Anthropic's Sonnet line and the successor to Claude Sonnet 5, which Anthropic calls its best combination of speed and intelligence: output more than 30% faster than Sonnet 5, fewer tokens and tool calls for the same task, and 70.6% on Terminal-Bench 4.0. It has a 1M-token context window, up to 128K output tokens per request and adaptive thinking, with image input, tool calling, prompt caching and streaming. KovAPI serves it through both the OpenAI-compatible API and the native Anthropic Messages API (/anthropic), so Claude Code connects directly; effort control, thinking summaries, structured output and PDF input are available on the native API. Pay as you go; failed calls are never billed.
Claude Opus 5
Claude Opus 5 is the next-generation flagship from Anthropic, with adaptive thinking on by default. It excels at complex reasoning, code engineering and agent orchestration, and supports image understanding, tool use and prompt caching. Fully OpenAI-API compatible: set model to claude-opus-5; or use the native Anthropic Messages API so Claude Code connects directly.
Claude Fable 5
Claude Fable 5 belongs to the Anthropic Fable series: same generation and capability base as Opus 5 (adaptive thinking, tool use, image understanding, prompt caching), with a finer touch and richer emotional layering in Chinese narrative and long-form writing. Fully OpenAI-API compatible: set model to claude-fable-5; the native Anthropic Messages API is supported as well.
Claude Sonnet 4.6
Claude Sonnet 4.6 strikes an excellent balance between capability and speed, excelling at everyday chat, code and agents at a great price. Fully OpenAI-API compatible: set model to claude-sonnet-4-6 and you are connected.
Image
GPT Image
OpenAI
GPT Image 2.5
GPT Image 2.5 is the next-generation OpenAI image model in two style branches: Flare comes back cleaner and smoother, Sunburst grainier with heavier texture and stronger highlights. Identical capabilities and price - only the look differs. Use Model Type to pick one.
GPT Image 2
GPT Image 2 is built for commercial creative work: article covers, product shots, posters, infographics and illustrations. Supports both text-to-image and image-to-image, 1K / 2K / 4K resolutions and multiple aspect ratios, through the OpenAI-compatible images API.
Nano Banana
Google
Nano Banana Pro
Nano Banana Pro (Gemini 3 Pro Image) is a flagship image model with stronger detail and composition. Supports text-to-image and image-to-image, excels at typography and complex scenes, and suits commercial covers and high-quality illustration, through the OpenAI-compatible images API.
Nano Banana 2.1
Nano Banana 2.1 is Google's October 2026 upgrade of Nano Banana 2 (Gemini 3.1 Flash Image). It keeps Flash-level speed while improving image quality, prompt adherence, in-image text and infographic layout, and wide or panoramic ratios no longer show repeated, tiled patches. One model handles text-to-image and editing, and edits can combine several reference images. 1K / 2K / 4K and many aspect ratios through the OpenAI images API: set model to nano-banana-2.1. Billed per image, failed jobs refunded in full.
Nano Banana 2
Nano Banana 2 (Gemini 3.1 Flash Image) excels at covers, posters, illustrations and product shots. Supports text-to-image and image-to-image, 1K / 2K / 4K resolutions and multiple aspect ratios; fast and cost-efficient, through the OpenAI-compatible images API.
Video
Seedance
ByteDance
Seedance 2.5
Seedance 2.5: per-second and temporary per-clip tiers. Capabilities and prices depend on the selected model.
Seedance 2.0
The ByteDance Seedance 2.0 family: 2.0 standard renders 480P / 720P / 1080P and Fast is the quickest, 5-15 seconds billed per second; the Clip special tier is $1.00 per clip at 5 / 10 / 15 seconds and accepts photos of real people as references.
Seedance 2.5 · Token
For creative workflows that value reliable delivery and responsiveness. Original video links and original-file downloads are provided. Content review applies; material preparation and queue times vary by task.
Veo · Omni
Google
Gemini Omni Flash
Gemini Omni Flash is Google's next-generation video model, released in 2026. One endpoint, parameters pick the mode: text-to-video with no image, one image as the first frame, two as first and last frame, and with image_role=reference one to three images as subject references. 6, 8 or 10 seconds, 720P or 1080P, landscape 16:9 or portrait 9:16, with native audio, and strong at following a storyboard across several shots. Asynchronous: submit, then poll the job id for a re-hosted mp4 link (kept for 15 days). Billed per second at $0.05/s; failed jobs are refunded in full.
Veo 3.1
Veo 3.1 is Google's AI video model. One endpoint, parameters pick the type: text-to-video with no reference; one image as the first frame, two as first and last frame; with image_role=reference, one to three images as subject or style references. The Fast tier is open: 720p or 1080p, landscape 16:9 or portrait 9:16, 8 seconds per clip with native audio. Asynchronous: submit, then poll the job id for a re-hosted video link (kept for 15 days). Billed per clip (720p $0.20, 1080p $0.22); failed jobs are refunded in full.
Coming soon
Claude Haiku 5.5 API: Anthropic's fastest, cheapest and most capable small model yet, with a 1M-token context, the first Haiku with effort control, and list prices up to 90% below Haiku 4.5
Claude Fable 5.1 Coming soonAnthropic's most capable widely released model: the successor to Fable 5, with a 1M-token context
Common questions on access, billing, models and safety. KovAPI FAQ →
