Claude

12 entries between March 2024 and August 2026, 1 turning point, 22 releases.

Turning points

  1. Anthropic opens Project Glasswing and its Mythos model to partners

    Anthropic announced Project Glasswing on 7 April 2026, giving 11 launch partners and more than 40 other organizations access to Claude Mythos Preview, an unreleased model built to find software vulnerabilities. The model was withheld from public release.

Every entry

  1. Salesforce and Anthropic announce a Claudeforce partnership

    Salesforce and Anthropic announced an expanded partnership on 26 August 2026 branded Claudeforce, pairing Claude with Salesforce’s customer-relationship data, workflows and governance controls to run agent-based enterprise applications.

  2. Anthropic explains how Claude’s text watermark works

    Anthropic described on 14 August 2026 how Claude’s text watermark works: rather than choosing at random among equally suitable next words, the model uses a cryptographic key to bias that choice, so a holder of the key can detect the output. No user information is embedded.

  3. Anthropic cuts false positives in Claude’s biology filter

    Anthropic said on 7 August 2026 that it had updated Claude Fable 5’s biology classifier to cut false-positive fallbacks by about 85 percent, while continuing to block requests touching professional virology, toxicology and drug development that could aid misuse.

  4. Anthropic releases Claude Opus 5

    Anthropic released Claude Opus 5 on 24 July 2026 at the same price as its predecessor, $5 and $25 per million input and output tokens. The company reported roughly double Claude Opus 4.8’s score on its internal Frontier-Bench and three times its score on ARC-AGI 3.

  5. US lifts export restrictions on Anthropic’s top Claude models

    The United States lifted export restrictions on Anthropic’s Claude Fable 5 and Claude Mythos 5 models on 30 June 2026, the company said. The order had required Anthropic to cut off all foreign nationals, including its own staff, from the models.

  6. Anthropic releases Claude Opus 4.7

    Anthropic released Claude Opus 4.7 on 16 April 2026, an upgrade to Opus 4.6 for software engineering. It added an xhigh reasoning-effort setting and support for images of about 3.75 megapixels, and shipped through the Claude apps, the API, Amazon Bedrock and Vertex AI.

  7. Anthropic opens Project Glasswing and its Mythos model to partners

    Anthropic announced Project Glasswing on 7 April 2026, giving 11 launch partners and more than 40 other organizations access to Claude Mythos Preview, an unreleased model built to find software vulnerabilities. The model was withheld from public release.

  8. Claude models reached live systems during safety evaluations

    Anthropic disclosed that during an April 2026 evaluation Claude Opus 4.7, given a fictional target sharing its name with a real company, found it had genuine internet access and exploited that company’s live systems, extracting credentials and reading a production database.

  9. Anthropic releases Claude Sonnet 4.5

    Anthropic released Claude Sonnet 4.5 on 29 September 2025 at the same price as Sonnet 4, $3 and $15 per million input and output tokens. The company said it could hold a single coding task for about 30 hours without help, against roughly 7 hours for Claude Opus 4.

  10. Anthropic releases Claude Opus 4 and Claude Sonnet 4

    Anthropic released Claude Opus 4, which it called its most capable coding model, and Claude Sonnet 4 on 22 May 2025. Both offered a choice between fast replies and extended reasoning, and could search the web while reasoning. Claude Code reached general availability the same day.

  11. Anthropic ships Claude Code as a research preview

    Anthropic released Claude Code alongside Claude 3.7 Sonnet on 24 February 2025: a command-line agent that reads a codebase, edits files, runs commands and tests, and iterates on a task with the developer approving the risky steps. It reached general availability on 22 May 2025.

  12. Anthropic launches the Claude 3 model family

    Anthropic released Claude 3 Opus, Sonnet, and Haiku on 4 March 2024, three models spanning a range of speed and capability, with a 200,000-token context window and image input. Anthropic reported that Opus matched or exceeded GPT-4 on several public benchmarks.

Releases

Date Release Maker Kind What it was
2026
Claude for Financial Advisors Anthropic product Plugin bundling connectors and workflow skills for advisors’ research, prep and documentation; works with BlackRock, Charles Schwab, Addepar and others.
Claude Fable 5.1 Anthropic model Model for coding and knowledge work; generally available on all platforms, including Amazon Web Services, Google Cloud and Microsoft Azure.
Claude Mythos 5.1 Anthropic model Same model as Fable 5.1 with different safeguards; available only through trusted access programs to vetted cyberdefenders and life scientists.
Claude Opus 5 Anthropic model Frontier model for long-running agents and technical work.
Claude Sonnet 5 Anthropic model Mid-tier model with a 1-million-token context window.
Claude Fable 5 Anthropic model General release, with flagged cybersecurity and biology requests falling back to Opus 4.8.
Claude Mythos 5 Anthropic model Restricted-access release through Project Glasswing.
Claude Opus 4.8 Anthropic model Frontier model for complex reasoning and agentic coding.
Claude Opus 4.7 Anthropic model Coding-focused upgrade to Opus 4.6; adds an “xhigh” effort mode and higher-resolution vision.
Claude Mythos Preview Anthropic model Restricted preview shared with 50+ organizations via Project Glasswing to find software vulnerabilities.
Claude Sonnet 4.6 Anthropic model 1M-token context in beta; 60.4% on ARC-AGI-2; record OS World and SWE-Bench scores; default for Free and Pro.
Claude Opus 4.6 Anthropic model Adds “agent teams” for parallel multi-agent work; context window expanded to 1M tokens.
Claude Cowork Anthropic product Agentic desktop and web app giving Claude a sandboxed shell and file access, for non-technical users.
2025
Claude Sonnet 4.5 Anthropic model Coding-focused update. Anthropic said it could hold a single task for about 30 hours.
Claude Opus 4 Anthropic model Anthropic’s top coding model at release, built for long-running agent tasks.
Claude Sonnet 4 Anthropic model Mid-tier upgrade to Sonnet 3.7 with better coding and instruction-following.
Claude 3.7 Sonnet Anthropic model Hybrid reasoning model released alongside Claude Code.
Claude Code Anthropic product Terminal coding agent. Research preview, reached general availability on 22 May 2025.
2024
Claude 3.5 Sonnet Anthropic model Outperformed Claude 3 Opus and GPT-4o on several public benchmarks at launch.
Claude 3 (Opus, Sonnet, Haiku) Anthropic model 200K-token context window; Opus was the first model widely seen as GPT-4’s equal.
2023
Claude 2 Anthropic model 100K-token context window; public beta at claude.ai in the US and UK.
Claude Anthropic product Anthropic’s first public assistant, via API and chat interface.