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  "articleBody": "We've been using and tuning Amp with [Claude 4](https://www.anthropic.com/news/claude-4) internally for weeks. Now that Anthropic has released it, we've switched Amp's primary model to be Claude Sonnet 4.\n\nAmp is already designed to get the most power out of Claude 4. In our testing, we've found this new model to be:\n\n- Faster\n- More stable, less easily distracted\n- Smarter at tool calling\n- More willing to invoke tools in parallel\n- Better at recovering from errors\n- Generally more trustworthy\n\nTo start using Claude 4 in Amp, update to the latest release of Amp's VS Code extension or CLI. No settings changes are needed; see [why we don't make the user switch models](https://ampcode.com/fif#model-selector).\n",
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  "captured_at": "2026-10-04T12:50:30.804479567+00:00",
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  "content_html": "<p>We've been using and tuning Amp with <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https://www.anthropic.com/news/claude-4\">Claude 4</a> internally for weeks. Now that Anthropic has released it, we've switched Amp's primary model to be Claude Sonnet 4.</p>\n<p>Amp is already designed to get the most power out of Claude 4. In our testing, we've found this new model to be:</p>\n<ul>\n<li>Faster</li>\n<li>More stable, less easily distracted</li>\n<li>Smarter at tool calling</li>\n<li>More willing to invoke tools in parallel</li>\n<li>Better at recovering from errors</li>\n<li>Generally more trustworthy</li>\n</ul>\n<p>To start using Claude 4 in Amp, update to the latest release of Amp's VS Code extension or CLI. No settings changes are needed; see <a target=\"_blank\" rel=\"noopener noreferrer\" href=\"https://ampcode.com/fif#model-selector\">why we don't make the user switch models</a>.</p>\n",
  "content_markdown": "We've been using and tuning Amp with [Claude 4](https://www.anthropic.com/news/claude-4) internally for weeks. Now that Anthropic has released it, we've switched Amp's primary model to be Claude Sonnet 4.\n\nAmp is already designed to get the most power out of Claude 4. In our testing, we've found this new model to be:\n\n- Faster\n- More stable, less easily distracted\n- Smarter at tool calling\n- More willing to invoke tools in parallel\n- Better at recovering from errors\n- Generally more trustworthy\n\nTo start using Claude 4 in Amp, update to the latest release of Amp's VS Code extension or CLI. No settings changes are needed; see [why we don't make the user switch models](https://ampcode.com/fif#model-selector).\n",
  "dateCreated": "2026-10-04T12:50:30.804479567+00:00",
  "date_created": "2025-05-22T00:00:00+00:00",
  "date_modified": "2025-05-22T00:00:00+00:00",
  "date_published": "2025-05-22T00:00:00+00:00",
  "description": "We've been using and tuning Amp with Claude 4 internally for weeks. Now that Anthropic has released it, we've switched Amp's primary model to be Claude Sonnet 4. Amp is already designed to get the most power out of Claude 4. In our…",
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    "headline": "Amp Now Uses Claude Sonnet 4",
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  "summary": "We've been using and tuning Amp with Claude 4 internally for weeks. Now that Anthropic has released it, we've switched Amp's primary model to be Claude Sonnet 4. Amp is already designed to get the most power out of Claude 4. In our testing, we've found this new model to be: Faster More stable, less easily distracted Smarter at tool calling More willing to invoke tools in parallel Better at recovering from errors Generally more trustworthy To start using Claude 4 in Amp, update to the latest release of Amp's VS Code extension or CLI. No settings changes are needed; see why we don't make the user switch models.",
  "tags": [],
  "temporalCoverage": "2026-10-04T12:50:30.804479567+00:00",
  "title": "Amp Now Uses Claude Sonnet 4",
  "url": "https://aggr.aymericbeaumet.com/items/ampcode-com/2025-05-22-amp-now-uses-claude-sonnet-4/",
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