Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with improvements across system design, code security, and specification adherence. The model is designed for extended autonomous operation, maintaining task continuity across sessions and providing fact-based progress tracking. Sonnet 4.5 also introduces stronger agentic capabilities, including improved tool orchestration, speculative parallel execution, and more efficient context and memory management. With enhanced context tracking and awareness of token usage across tool calls, it is particularly well-suited for multi-context and long-running workflows. Use cases span software engineering, cybersecurity, financial analysis, research agents, and other domains requiring sustained reasoning and tool use.
A quick read of the model identity, commercial setup, and access footprint.
Published rates, tier transitions, and modality-specific surcharges in the current catalog entry.
| Context Length | Prompt | Output | 5m cache write | 1h cache write | Cache hit |
|---|---|---|---|---|---|
| 0 - 200,000 tokens | $0.2143/1M tokens | $1.0714/1M tokens | $0.2679/1M tokens | $0.4286/1M tokens | $0.0214/1M tokens |
| >= 200,001 tokens 200K-1M | $0.2143/1M tokens | $1.0714/1M tokens | $0.2679/1M tokens | $0.4286/1M tokens | $0.0214/1M tokens |
Hourly usage, latency, reliability, and throughput for this model.
Top 10 AI coding agents using this model during the last 15 days.
Top 10 official SDKs and language HTTP clients using this model during the last 15 days.
同系列或更低输入价的公开模型。 / Same provider or cheaper catalog alternatives.
| Model | Provider | Type | Input | Output |
|---|---|---|---|---|
| claude-haiku-5-5 | Anthropic | chat | 0.1000 Token / 1M tokens | 0.5000 Token / 1M tokens |
| claude-haiku-4-5 | Anthropic | chat | 1.00 Token / 1M tokens | 5.00 Token / 1M tokens |
| claude-haiku-4-5-20251001 | Anthropic | chat | 1.00 Token / 1M tokens | 5.00 Token / 1M tokens |
| claude-sonnet-5 | Anthropic | chat | 2.00 Token / 1M tokens | 10.00 Token / 1M tokens |
| claude-sonnet-5-5 | Anthropic | chat | 2.00 Token / 1M tokens | 10.00 Token / 1M tokens |
| claude-opus-4-1-20250805 | Anthropic | chat | 3.00 Token / 1M tokens | 15.00 Token / 1M tokens |
| # | SDK / Language | Total Tokens | Requests | Success rate | Last active |
|---|---|---|---|---|---|
| 1 |  cURL / HTTP Client Language SDK / HTTP client | 0 | 1 | 0.0% | 2026-10-20 |
