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Claude Sonnet 4.5
Model Release
Anthropic
Claude Sonnet 4.5 launched by Anthropic. Anthropic's balanced Sonnet 4.5 for production coding and agent workflows.
AI Release Timeline
Track model launches, capability updates, pricing changes, and benchmark milestones across the AI industry.
2026
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Claude Sonnet 4.5
API Release
Anthropic
API endpoint `claude-sonnet-4-5` available for Claude Sonnet 4.5.
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Claude Sonnet 4.5
Pricing Update
Anthropic
Initial pricing set at $3.00/M input and $15.00/M output tokens.
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Claude Sonnet 4.5
Vision Support
Anthropic
Claude Sonnet 4.5 adds native vision and image understanding capabilities.
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Claude Sonnet 4.5
Function Calling
Anthropic
Claude Sonnet 4.5 supports function calling and structured tool use.
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Claude Sonnet 4.5
Reasoning Model
Anthropic
Claude Sonnet 4.5 introduces extended reasoning and chain-of-thought capabilities.
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Claude Sonnet 4.5
Benchmark Milestone
Anthropic
Claude Sonnet 4.5 achieves 95/100 coding benchmark score — top-tier performance.
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Claude Opus 4.1
Model Release
Anthropic
Claude Opus 4.1 launched by Anthropic. Anthropic's latest Opus-class model for deep reasoning, coding, and long-form analysis.
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Claude Opus 4.1
API Release
Anthropic
API endpoint `claude-opus-4-1` available for Claude Opus 4.1.
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Claude Opus 4.1
Pricing Update
Anthropic
Initial pricing set at $15.00/M input and $75.00/M output tokens.
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Claude Opus 4.1
Vision Support
Anthropic
Claude Opus 4.1 adds native vision and image understanding capabilities.
A
Claude Opus 4.1
Function Calling
Anthropic
Claude Opus 4.1 supports function calling and structured tool use.
A
Claude Opus 4.1
Reasoning Model
Anthropic
Claude Opus 4.1 introduces extended reasoning and chain-of-thought capabilities.
A
Claude Opus 4.1
Benchmark Milestone
Anthropic
Claude Opus 4.1 achieves 97/100 reasoning benchmark score — top-tier performance.