Claude Opus 4.5 est le modèle le plus intelligent d'Anthropic. Il allie des capacités maximales à des performances concrètes en matière de raisonnement, de code et de résolution de problèmes complexes.

Pricing: Input 285 credits / 1M tokens (≈ $1.425), Output 1,430 credits / 1M tokens (≈ $7.150) — both ~28.5% of official pricing. High-tier top-ups include +10% bonus credits. Effective pricing is approximately 10% lower than the above rates.
claude-opus-4-5

Automatically append previous messages to maintain multi-turn context. May increase token usage.

Function calling
Web Access
Thinking process
Reasoning effort
Max tokens
Stream Response

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Complete guide to using claude-opus-4-5

API Claude Opus 4.5 abordable – L'API Claude pour le code et les agents

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Découvrez Claude Opus 4.5 d'Anthropic
Le summum de l'intelligence avec Claude Opus 4.5 d'Anthropic
Codage avancé avec l'API Claude Opus 4.5
Raisonnement amélioré avec l'API Claude Opus 4.5
Des agents plus endurants avec une gestion intelligente du contexte
Tâches quotidiennes avec Claude Opus 4.5
FonctionnalitéClaude Sonnet 4.5Claude Haiku 4.5Claude Opus 4.5
DescriptionSmart Claude model built for complex agents and coding tasksFastest Claude model with near-frontier intelligencePremium Claude model combining maximum intelligence with practical performance
Best forSaaS apps, coding, agent workflowsChatbots, automation, simple tasksClaude Opus 4.5 coding, deep reasoning, advanced agents
Agentic abilityStrongBasicBest-in-class
Long-running tasksMediumShortLong, multi-step
Context handlingAdvancedStandardAdvanced with reasoning memory
Response speedFastFastestModerate
Output qualityVery goodGoodHighest
FonctionnalitéClaude Opus 4.5Gemini 3 Pro
Core focusFrontier coding, deep reasoning, and long-running agent workflowsMultimodal intelligence, research, and general-purpose AI
Coding & logicBest-in-class for Claude Opus 4.5 coding, refactoring, and complex system debuggingStrong, but more optimized for concise and practical code
Long context handlingExcellent at large documents, deep analysis, and multi-step reasoningGood, but less focused on long-horizon agent tasks
Agent workflowsDesigned for complex agents, planning, and tool-driven orchestrationBetter suited for broad assistant and research workflows
Multimodal abilityText-first, optimized for logic and codeBest for video, image, and UI understanding
Output styleDetailed, insightful, and preciseConcise, efficient, and fast
Ecosystem integrationStrong for developer tools and AI agentsDeep integration with Google Search and Google tools
Best use casesAdvanced software engineering, reasoning, and Claude Opus 4.5 API agentsMultimodal research, UI ideas, and large-scale general AI use
FonctionnalitéClaude Opus 4.5GPT-5.2 Codex
Overall coding performanceLeads SWE-bench Verified with 80.9%, strong on real-world repositoriesVery close at 80.0%, state-of-the-art on SWE-bench Pro
Code qualityClean, well-structured, and defensive, designed for long-term maintainabilityConcise and fast, but more likely to cause integration or version issues
Long-context workExcellent for large codebases, refactors, and multi-file changesVery strong, but less focused on long-running agent workflows
Agent workflowsBuilt for agentic coding, planning, and tool-driven orchestrationStrong for fast single-agent coding and rapid iteration
Terminal and DevOpsMuch stronger command-line and multi-step workflow handlingGood, but less consistent with complex terminal tasks
Mathematical reasoningVery strong, but not top in pure math benchmarksBest-in-class for math, algorithms, and formal reasoning
Output styleMore detailed and explanatory, better for reviews and refactoringShorter and more direct, better for quick coding
Best use casesArchitecture, refactoring, large systems, Claude Opus 4.5 coding, and production agentsAlgorithms, fast prototyping, cost-sensitive or math-heavy coding
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