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Claude Sonnet 5 is liveAnthropic’s most agentic Sonnet yet: stronger coding, tool use, and long-running execution with a 1M context window—near-Opus capability at Sonnet speed and cost.Anthropic’s most agentic Sonnet yet: stronger coding, tool use, and long-running execution with a 1M context window—near-Opus capability at Sonnet speed and cost.Explore modelView->

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SeaLink
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Developer docs

Integrate SeaLink with the tools you already use

Start with an OpenAI-compatible API, then add model capabilities, integrations, billing controls, and production checks as your usage grows.

Start quickstart View API reference

Production endpoint

base_urlhttps://api.sealink.io/v1

modelclaude-opus-5-5

contractOpenAI-compatible

01QuickstartGet your first API response in 5 minutes.02OpenAI APIHow to call chat, vision, images, video, audio, embeddings, rerank, moderation, and account endpoints.03Anthropic APIAnthropic Messages-compatible endpoint for Claude Code and native clients.04Integrations overviewOne place to choose the right guide for your toolchain.

Docs index

Documentation library

Pick the exact surface you need: setup, integrations, model capabilities, or account operations.

Start

Core API shape, concepts, and first call.

01StartQuickstartGet your first API response in 5 minutes.Read 02StartCore conceptsTokens, models, context windows, and request basics.Read 03StartOpenAI APIHow to call chat, vision, images, video, audio, embeddings, rerank, moderation, and account endpoints.Read 04StartSDKsUse existing OpenAI and Anthropic SDK clients with SeaLink endpoints.Read 05StartAnthropic APIAnthropic Messages-compatible endpoint for Claude Code and native clients.Read

Integrations

Connect IDEs, coding agents, workflow tools, and SDKs.

01IntegrationsIntegrations overviewOne place to choose the right guide for your toolchain.Read

Capabilities

Streaming, tools, images, embeddings, and caching.

01CapabilitiesChatCall chat models with messages, streaming, tools, vision input, and usage records.Read 02CapabilitiesEmbeddingsUse text-embedding-v4 for RAG and semantic search.Read 03CapabilitiesVisionSend image URLs or base64 images to multimodal chat models.Read 04CapabilitiesImagesGenerate, edit, vary, upscale, and transform images.Read 05CapabilitiesModel usage guideChoose the right endpoint, parameters, polling, and error-handling flow for each model capability.Read 06CapabilitiesVideoSubmit async video generation and editing tasks, then poll for results.Read 07CapabilitiesAudioText-to-speech, speech-to-text, translation, music, sound effects, and voice cloning.Read 08CapabilitiesRerankRerank retrieved documents for RAG and search workflows.Read 09CapabilitiesStreamingStream chat responses over SSE and handle partial output.Read 10CapabilitiesRealtimeValidate session-oriented realtime models separately from ordinary chat calls.Read 11CapabilitiesFunction callingLet compatible chat models call your tools with OpenAI-style schemas.Read 12CapabilitiesPrompt cachingReuse a long prompt prefix across calls to reduce repeated processing where caching is supported.Read 13CapabilitiesModerationCheck text and image inputs before generation.Read 14Capabilities3DCurrent public availability for 3D assets and PBR textures.Read

Operations

Limits, billing, webhooks, errors, and production readiness.

01OperationsBillingUsage records, invoices, payment notes, and finance-friendly exports.Read 02OperationsRate limitsUnderstand RPM, TPM, 429 responses, Retry-After, and retry behavior.Read 03OperationsSEA latency methodologyMeasure and report production latency with repeatable p50/p95 checks.Read 04OperationsError codesMap API errors to the right recovery path.Read 05OperationsWebhooksReceive account, billing, and usage events safely.Read 06OperationsMCPConnect MCP-capable tools and local agents through SeaLink-compatible endpoints.Read 07OperationsCompatibilityCheck protocol compatibility, SDK behavior, headers, and model capabilities.Read 08OperationsMigrationsMove from direct vendor APIs or another gateway to SeaLink.Read 09OperationsFAQ / HelpAccount, billing, setup, and troubleshooting questions.Read