Anthropic releases Claude Sonnet 4.5
Anthropic released Claude Sonnet 4.5 with gains in coding, complex agents, computer use, reasoning, and math.
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ORGANIZATION
Anthropic
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Anthropic releases Claude Opus 4.1
Anthropic releases Claude Opus 4.1, an incremental closed-model update tuned for complex mathematics and long reasoning chains.
Anthropic makes Claude Code generally available
Alongside the Claude 4 launch, Anthropic moved Claude Code out of research preview to general availability across terminal, IDE, background tasks, and SDK.
Anthropic releases Claude 4 Opus
Anthropic's fourth-generation top-tier flagship, raising the ceiling on multimodal understanding and logical tasks.
Anthropic releases Claude 4 Sonnet
The mid-size member of the Claude 4 family, striking a better balance between response speed and reasoning.
Anthropic releases Claude 3.7 Sonnet
Anthropic releases an upgrade that can switch between standard responses and extended reasoning mode.
Anthropic releases Claude 3.5 Sonnet
Claude 3.5 Sonnet improves reasoning, coding and vision, and introduces Artifacts.
Anthropic releases Claude 3
Anthropic releases the Claude 3 family with Haiku, Sonnet and Opus variants and image understanding.
Anthropic releases Claude 2.1
Anthropic released Claude 2.1 with a 200,000-token context window, system prompts, and tool use in beta.
Anthropic releases Claude 2
Anthropic releases Claude 2 with native support for context windows of up to 100,000 tokens and improved coding capability.
Anthropic releases Claude 1
Anthropic releases Claude 1, trained with Constitutional AI to emphasize safe and harmless outputs.