Claude 3.5 Sonnet vs Claude 3 Opus API Cost & Architecture Guide
Selecting between Claude 3.5 Sonnet (Anthropic) and Claude 3 Opus (Anthropic) for production Customer Support Agent workloads requires balancing token pricing, prompt caching discounts, context window capacity (200K vs 200K), and streaming throughput (85 vs 45 tok/s).
Claude 3.5 Sonnet is priced at $3.00 per 1M input tokens ($0.300/1M with prompt caching) and $15.00 per 1M output tokens. By comparison, Claude 3 Opus charges $15.00 per 1M input tokens ($1.500/1M cached) and $75.00 per 1M output tokens.
At 10,000 requests/day (540.0M monthly input tokens and 120.0M monthly output tokens with a 50% cache hit rate), Claude 3.5 Sonnet costs $2691.00/month whereas Claude 3 Opus costs $13455.00/monthโa monthly variance of $10764.00 ($129168/year).
Frequently Asked Questions
Is Claude 3.5 Sonnet or Claude 3 Opus cheaper for Customer Support Agent?
Under standard Customer Support Agent parameters (10,000 reqs/day, 1800 input tokens, 400 output tokens, 50% cache hit), Claude 3.5 Sonnet is more cost-effective, saving $10764.00 per month ($129168.00 annually).
How does prompt caching affect Claude 3.5 Sonnet vs Claude 3 Opus pricing?
Claude 3.5 Sonnet reduces cached input costs to $0.3/1M tokens, while Claude 3 Opus charges $1.5/1M cached input tokens. High system-prompt reuse in Customer Support Agent pipelines can cut total input token spend by 50%โ90%.
What are the context window and speed differences between Claude 3.5 Sonnet and Claude 3 Opus?
Claude 3.5 Sonnet supports a 200K token context window at ~85 tokens/sec, while Claude 3 Opus provides a 200K token context window at ~45 tokens/sec.