AI Release Timeline

Claude Sonnet 4.5 launched by Anthropic. Anthropic's balanced Sonnet 4.5 for production coding and agent workflows.

API endpoint `claude-sonnet-4-5` available for Claude Sonnet 4.5.

Initial pricing set at $3.00/M input and $15.00/M output tokens.

Claude Sonnet 4.5 adds native vision and image understanding capabilities.

Claude Sonnet 4.5 supports function calling and structured tool use.

Claude Sonnet 4.5 introduces extended reasoning and chain-of-thought capabilities.

Claude Sonnet 4.5 achieves 95/100 coding benchmark score — top-tier performance.

Claude Opus 4.1 launched by Anthropic. Anthropic's latest Opus-class model for deep reasoning, coding, and long-form analysis.

API endpoint `claude-opus-4-1` available for Claude Opus 4.1.

Initial pricing set at $15.00/M input and $75.00/M output tokens.

Claude Opus 4.1 adds native vision and image understanding capabilities.

Claude Opus 4.1 supports function calling and structured tool use.

Claude Opus 4.1 introduces extended reasoning and chain-of-thought capabilities.

Claude Opus 4.1 achieves 97/100 reasoning benchmark score — top-tier performance.

Claude 4 Sonnet launched by Anthropic. Latest Sonnet with improved reasoning and tool use.

API endpoint `claude-sonnet-4-20250514` available for Claude 4 Sonnet.

Initial pricing set at $3.00/M input and $15.00/M output tokens.

Claude 4 Sonnet adds native vision and image understanding capabilities.

Claude 4 Sonnet supports function calling and structured tool use.

Claude 4 Sonnet introduces extended reasoning and chain-of-thought capabilities.

Claude 4 Sonnet achieves 96/100 coding benchmark score — top-tier performance.

Claude 4 Opus launched by Anthropic. Anthropic flagship for the most demanding tasks.

API endpoint `claude-opus-4-20250514` available for Claude 4 Opus.

Initial pricing set at $15.00/M input and $75.00/M output tokens.

Claude 4 Opus adds native vision and image understanding capabilities.

Claude 4 Opus supports function calling and structured tool use.

Claude 4 Opus introduces extended reasoning and chain-of-thought capabilities.

Claude 4 Opus achieves 97/100 coding benchmark score — top-tier performance.

Claude 4 Haiku launched by Anthropic. Next-gen Haiku with Claude 4 intelligence at low cost.

API endpoint `claude-haiku-4-20250514` available for Claude 4 Haiku.

Initial pricing set at $0.80/M input and $4.00/M output tokens.

Claude 4 Haiku adds native vision and image understanding capabilities.

Claude 4 Haiku supports function calling and structured tool use.

Claude 3.7 Sonnet launched by Anthropic. Sonnet with extended thinking for harder problems.

API endpoint `claude-3-7-sonnet-20250219` available for Claude 3.7 Sonnet.

Initial pricing set at $3.00/M input and $15.00/M output tokens.

Claude 3.7 Sonnet adds native vision and image understanding capabilities.

Claude 3.7 Sonnet supports function calling and structured tool use.

Claude 3.7 Sonnet introduces extended reasoning and chain-of-thought capabilities.

Claude 3.7 Sonnet achieves 95/100 coding benchmark score — top-tier performance.

Claude 3.5 Haiku launched by Anthropic. Fast and affordable Claude for high-throughput workloads.

API endpoint `claude-3-5-haiku-20241022` available for Claude 3.5 Haiku.

Initial pricing set at $0.80/M input and $4.00/M output tokens.

Claude 3.5 Haiku adds native vision and image understanding capabilities.

Claude 3.5 Haiku supports function calling and structured tool use.

Claude 3.5 Sonnet launched by Anthropic. Balanced Claude model excelling at coding and analysis.

API endpoint `claude-3-5-sonnet-20241022` available for Claude 3.5 Sonnet.

Initial pricing set at $3.00/M input and $15.00/M output tokens.

Claude 3.5 Sonnet adds native vision and image understanding capabilities.

Claude 3.5 Sonnet supports function calling and structured tool use.

Claude 3.5 Sonnet achieves 94/100 writing benchmark score — top-tier performance.

Claude 3 Opus launched by Anthropic. Previous-gen Opus still strong for writing-heavy workloads.

API endpoint `claude-3-opus-20240229` available for Claude 3 Opus.

Initial pricing set at $15.00/M input and $75.00/M output tokens.

Claude 3 Opus adds native vision and image understanding capabilities.

Claude 3 Opus supports function calling and structured tool use.

Claude 3 Opus achieves 93/100 writing benchmark score — top-tier performance.