50 pages for opus5.

Or, for the model with the same capabilities and no access approval requirement: Claude Developer Platform · in the page about-claude/models/migration-guide …ameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 16000, Thinking = new ThinkingConfigAdaptive(), OutputConfig = new OutputConfig { Ef… optimizing-for-cost-and-intelligence Claude Developer Platform · in the page about-claude/models/optimizing-for-cost-and-intelligence …( new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [new() { Role = Role.User, Content = "Hello, Claude" }], } ); va… quickstart Claude Developer Platform · in the page agents-and-tools/agent-skills/quickstart …Messages.Create(new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 16000, Container = new ContainerParams { Skills = [ new Ski… mcp-connector Claude Developer Platform · in the page agents-and-tools/mcp-connector …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1000, Messages = new List<BetaMessageParam> { new() { Role = Role.User, Content = "… overview Claude Developer Platform · in the page agents-and-tools/mcp-tunnels/overview …ers = new MessageCreateParams { Model = Messages::Model.ClaudeOpus5, MaxTokens = 1000, Messages = new List<BetaMessageParam> { new() { Role = Role.User, Content = "… advisor-tool Claude Developer Platform · in the page agents-and-tools/tool-use/advisor-tool …rTool20260301 { Model = Messages::Model.ClaudeOpus5 } }, Messages = [ new BetaMessageParam { Role = Role.User,… bash-tool Claude Developer Platform · in the page agents-and-tools/tool-use/bash-tool …nt.Messages.Create( new() { Model = Model.ClaudeOpus5, MaxTokens = 1024, Tools = [new ToolBash20250124()], Messages = [ new(… browser-use-tool Claude Developer Platform · in the page agents-and-tools/tool-use/browser-use-tool …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 2048, Tools = [new BrowserToolset20260801()], Messages = [ new MessageParam… build-a-tool-using-agent Claude Developer Platform · in the page agents-and-tools/tool-use/build-a-tool-using-agent …Messages.Create(new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Tools = tools, ToolChoice = toolChoice, Messages = [new() { Role = Role.User, Con… code-execution-tool Claude Developer Platform · in the page agents-and-tools/tool-use/code-execution-tool …ge = await client.Messages.Create(new() { Model = Model.ClaudeOpus5, MaxTokens = 4096, Messages = [new() { Role = Role.User, Content = "Use the code execution tool to calculate the… computer-use-tool Claude Developer Platform · in the page agents-and-tools/tool-use/computer-use-tool …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Tools = [ new ComputerToolset20260801(), new ToolTextEditor20250728… define-tools Claude Developer Platform · in the page agents-and-tools/tool-use/define-tools …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Tools = [ new ToolUnion(new Tool() { Name = "get_weather",… fine-grained-tool-streaming Claude Developer Platform · in the page agents-and-tools/tool-use/fine-grained-tool-streaming …MessageCreateParams parameters = new() { Model = Model.ClaudeOpus5, MaxTokens = 65536, Tools = [ new Tool { Name = "make_file",… memory-tool Claude Developer Platform · in the page agents-and-tools/tool-use/memory-tool …nt.Messages.Create( new() { Model = Model.ClaudeOpus5, MaxTokens = 2048, Messages = [ new() { Role = R… overview Claude Developer Platform · in the page agents-and-tools/tool-use/overview …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Tools = [new ToolUnion(new WebSearchTool20260209())], Messages = [new() { Role = Role.U… parallel-tool-use Claude Developer Platform · in the page agents-and-tools/tool-use/parallel-tool-use …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [new() { Role = Role.User, Content = "What's the weather in SF and NYC, and what t… Process results programmatically Claude Developer Platform · in the page agents-and-tools/tool-use/programmatic-tool-calling …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 4096, Messages = [ new() { Role = Role.User, Content = "Query… server-tools Claude Developer Platform · in the page agents-and-tools/tool-use/server-tools …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [ new() { Role = Role.User, Content = "Searc… strict-tool-use Claude Developer Platform · in the page agents-and-tools/tool-use/strict-tool-use …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [new() { Role = Role.User, Content = "What's the weather like in San Francisco?" }… text-editor-tool Claude Developer Platform · in the page agents-and-tools/tool-use/text-editor-tool …nt.Messages.Create( new() { Model = Model.ClaudeOpus5, MaxTokens = 1024, Tools = [new ToolTextEditor20250728 { MaxCharacters = 10000 }], Messages =… Log at info level Claude Developer Platform · in the page agents-and-tools/tool-use/tool-runner …new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [ new() {… tool-search-tool Claude Developer Platform · in the page agents-and-tools/tool-use/tool-search-tool …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 2048, Messages = [ new() { Role = Role.User, Content = "What… web-search-tool Claude Developer Platform · in the page agents-and-tools/tool-use/web-search-tool …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 4096, Messages = [new() { Role = Role.User, Content = "Search for the current prices of AAPL and GO… beta-headers Claude Developer Platform · in the page api/beta-headers …), anthropic.BetaMessageNewParams{ Model: anthropic.ModelClaudeOpus5, MaxTokens: 1024, Messages: []anthropic.BetaMessageParam{ anthropic.NewBetaUserMessage(anthropic.NewBetaTextBlock(… Message Batches API Claude Developer Platform · in the page build-with-claude/batch-processing …Params = new() { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [ new() { Role = R… cache-diagnostics Claude Developer Platform · in the page build-with-claude/cache-diagnostics …s.Create( new() { Model = Messages::Model.ClaudeOpus5, MaxTokens = 1024, CacheControl = new(), System = system, Messages = [… citations Claude Developer Platform · in the page build-with-claude/citations …nt.Messages.Create( new() { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [ new() { Role = R… claude-on-vertex-ai Claude Developer Platform · in the page build-with-claude/claude-on-vertex-ai …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 100, Messages = [new() { Role = Role.User, Content = "Hey Claude!" }] }; var message = await c… compaction Claude Developer Platform · in the page build-with-claude/compaction …), anthropic.BetaMessageNewParams{ Model: anthropic.ModelClaudeOpus5, MaxTokens: 4096, Messages: messages, ContextManagement: anthropic.BetaContextManagementConfigParam{ Edits: []… context-editing Claude Developer Platform · in the page build-with-claude/context-editing …ers = new MessageCreateParams { Model = Messages::Model.ClaudeOpus5, MaxTokens = 4096, Messages = [ new() { Role = Role.User, Content = "Search for recent developments in… effort Claude Developer Platform · in the page build-with-claude/effort …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 4096, Messages = [ new() { Role = Role.User, Content = "Analy… fast-mode Claude Developer Platform · in the page build-with-claude/fast-mode …), anthropic.BetaMessageNewParams{ Model: anthropic.ModelClaudeOpus5, MaxTokens: 4096, Speed: anthropic.BetaMessageNewParamsSpeedFast, Betas: []anthropic.AnthropicBeta{anthropi… files Claude Developer Platform · in the page build-with-claude/files …( new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [ new MessageParam {… handling-stop-reasons Claude Developer Platform · in the page build-with-claude/handling-stop-reasons …Messages.Create(new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [new() { Role = Role.User, Content = "Hello!" }] }); if (response.StopReason… mid-conversation-effort-example Claude Developer Platform · in the page build-with-claude/mid-conversation-effort-example …AnthropicClient client = new(); const Model model = Model.ClaudeOpus5; var effort = Effort.Xhigh; const string systemPrompt = "You are a helpful general-purpose agent. Answer the user's req… mid-conversation-system-messages Claude Developer Platform · in the page build-with-claude/mid-conversation-system-messages …reate(new MessageCreateParams { Model = Messages::Model.ClaudeOpus5, MaxTokens = 1024, Betas = ["mid-conversation-tool-changes-2026-07-01"], // The full tool set is declared… multilingual-support Claude Developer Platform · in the page build-with-claude/multilingual-support …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, System = "Always respond in French, regardless of the language the user writes in.", Me… pdf-support Claude Developer Platform · in the page build-with-claude/pdf-support …Messages.Create(new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [ new() { Role = Role.User,… Request 2 caches its request content (not the response) Claude Developer Platform · in the page build-with-claude/prompt-caching …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, CacheControl = new CacheControlEphemeral(), System = "You are an AI assistant tasked wi… claude-prompting-best-practices Claude Developer Platform · in the page build-with-claude/prompt-engineering/claude-prompting-best-practices …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, System = "You are a helpful coding assistant specializing in Python.", Messages =… search-results Claude Developer Platform · in the page build-with-claude/search-results …se = await client.Messages.Create(new() { Model = Model.ClaudeOpus5, MaxTokens = 1024, Tools = tools, ToolChoice = new ToolChoiceTool { Name = "search_knowledge_base" },… streaming Claude Developer Platform · in the page build-with-claude/streaming …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [new() { Role = Role.User, Content = "Hello" }] }; await foreach (var msg in… structured-outputs Claude Developer Platform · in the page build-with-claude/structured-outputs …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [new() { Role = Role.User, Content = "Extract the key information from this email:… task-budgets Claude Developer Platform · in the page build-with-claude/task-budgets …aming(new MessageCreateParams { Model = Messages::Model.ClaudeOpus5, MaxTokens = 128000, Messages = [new() { Role = Role.User, Content = "Review the codebase and propose a refactor… token-counting Claude Developer Platform · in the page build-with-claude/token-counting …rameters = new MessageCountTokensParams { Model = Model.ClaudeOpus5, System = "You are a scientist", Messages = [new() { Role = Role.User, Content = "Hello, Claude" }] }; var… vision Claude Developer Platform · in the page build-with-claude/vision …Messages.Create(new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [ new() { Role = Role.User,… working-with-messages Claude Developer Platform · in the page build-with-claude/working-with-messages …ar parameters = new MessageCreateParams { Model = Model.ClaudeOpus5, MaxTokens = 1024, Messages = [new() { Role = Role.User, Content = "Hello, Claude" }] }; var message = await… apple-foundation-models Claude Developer Platform · in the page cli-sdks-libraries/libraries/apple-foundation-models …oundation-models#capabilities)): ```swift ClaudeLanguageModel(name: .opus5, auth: auth) ``` Constants mirror API model IDs (`.opus5` is `claude-opus-5`) and carry each model's capabilities. New mode… csharp Claude Developer Platform · in the page cli-sdks-libraries/sdks/csharp …Content = "Hello, Claude", }, ], Model = Model.ClaudeOpus5, }; var message = await client.Messages.Create(parameters); foreach (var block in message.Content) { if (block.TryPick… go Claude Developer Platform · in the page cli-sdks-libraries/sdks/go …xtBlock("What is a quaternion?")), }, Model: anthropic.ModelClaudeOpus5, }) if err != nil { panic(err.Error()) } for _, block := range message.Content { if textBlock, ok := block.AsAny().(…