Claude Opus 4.5 is Anthropic’s latest reasoning model, developed for advanced software engineering, complex agent workflows, and extended computer tasks. It features strong multimodal capabilities and performs competitively on real-world coding and reasoning benchmarks, with enhanced resilience against prompt injection. Optimized for efficiency at varying effort levels, it allows developers to balance speed, depth, and token usage according to their specific needs, thanks to a new parameter for controlling token efficiency. Opus 4.5 excels in advanced tool integration, contextual management, and multi-agent coordination, making it ideal for autonomous research, debugging, complex planning, and spreadsheet or browser manipulation. Compared to previous Opus generations, it delivers significant improvements in structured reasoning, long-duration task performance, execution reliability, and alignment, all while reducing token overhead.
$2.50market price $5.00
$0.25market price $0.50
$12.50market price $25.00
Throughput is how fast the model writes (tokens per second, higher is better). Time to first token is how long before the answer starts (lower is better).
Share of requests served without a server error. Client errors (4xx) do not count.
Works with the OpenAI SDK pointed at our base URL. Every parameter is in the API reference.
Tokens processed per day on NagaAI.
Claude Opus 4.5 is Anthropic’s latest reasoning model, developed for advanced software engineering, complex agent workflows, and extended computer tasks.
On NagaAI, Claude Opus 4.5 costs $2.50 per 1M input tokens and $12.50 per 1M output tokens. You pay only for what you use, with no subscription.
Claude Opus 4.5 reads up to 200k tokens in one request, counting the prompt and the answer together.
Yes. Claude Opus 4.5 can call your functions as tools and can answer in a JSON schema you give it.
It takes text, images and files as input and returns text.
Create an API key, copy the model ID from the top of this page and send requests with the OpenAI or Anthropic SDK pointed at NagaAI. The API section on this page has a ready example.
Claude Haiku 5.5AnthropicClaude Sonnet 5.5AnthropicClaude Opus 5.5AnthropicClaude Fable 5.1AnthropicClaude Opus 5AnthropicClaude Sonnet 5AnthropicNot enough throughput data
Not enough TTFT data