Upcoming deprecation of Opus 4.6 (fast) - GitHub Changelog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/github.blog\/changelog\/2026-06-18-upcoming-deprecation-of-opus-4-6-fast\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Upcoming deprecation of Opus 4.6 (fast) \u00b7 GitHub Changelog\" \/>\n<meta property=\"og:description\" content=\"We will deprecate Opus 4.6 (fast) across all GitHub Copilot experiences (including Copilot Chat, inline edits, ask and agent modes, and code completions), on June 29th, 2026: Model Deprecation date…\" \/>\n<meta property=\"og:url\" content=\"https:\/\/github.blog\/changelog\/2026-06-18-upcoming-deprecation-of-opus-4-6-fast\/\" \/>\n<meta property=\"og:site_name\" content=\"The GitHub Blog\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-19T00:00:39+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/github.blog\/wp-content\/uploads\/2026\/06\/610145064-98be6320-9bb0-4b7e-9518-36c60aa47713.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n\t<meta name=\"twitter:label2\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data2\" content=\"Allison\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/github.blog\\\/changelog\\\/2026-06-18-upcoming-deprecation-of-opus-4-6-fast\\\/\",\"url\":\"https:\\\/\\\/github.blog\\\/changelog\\\/2026-06-18-upcoming-deprecation-of-opus-4-6-fast\\\/\",\"name\":\"Upcoming deprecation of Opus 4.6 (fast) - 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We will deprecate Opus 4.6 (fast) across all GitHub Copilot experiences (including Copilot Chat, inline edits, ask and agent modes, and code completions), on June 29th, 2026:<\/p>\n

\n\n\n\n\n

Model<\/th>\n	Deprecation date<\/th>\n	Suggested alternative<\/th>\n<\/tr>\n<\/thead>\n
Opus 4.6 (fast)<\/td>\n	6-29-2026<\/td>\n	Opus 4.8 (fast)<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/content-table-wrap><\/div>\n Please update your workflows and integrations to use the supported model before these dates. Copilot Enterprise administrators may need to enable access to the alternative model through their model policies in Copilot settings. As an administrator, you can verify availability by checking your individual Copilot settings and confirming that the policy is enabled for the specific model. Once enabled, you’ll see the model in the Copilot Chat model selector in VS Code and on github.com. No action is required to remove the model once it has been deprecated.<\/p>\n GitHub Enterprise customers with questions or concerns are encouraged to reach out to their account manager for further assistance.<\/p>\n Share your feedback<\/span><\/a><\/h3>\n To learn more about the models available in Copilot, see our documentation on models<\/a> and get started with Copilot today.<\/p>\n Join the GitHub Community<\/a> to share your feedback.<\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":" We will deprecate Opus 4.6 (fast) across all GitHub Copilot experiences (including Copilot Chat, inline edits, ask and agent modes, and code completions), on June 29th, 2026: Model Deprecation date…<\/p>\n","protected":false},"author":2106,"featured_media":0,"template":"","meta":{"_gh_post_show_toc":"","_gh_post_is_no_robots":"","_gh_post_is_featured":"","_gh_post_is_excluded":"","_gh_post_is_unlisted":"","_gh_post_related_link_1":"","_gh_post_related_link_2":"","_gh_post_related_link_3":"","_gh_post_sq_img":"","_gh_post_sq_img_id":"","_gh_post_cta_title":"","_gh_post_cta_text":"","_gh_post_cta_link":"","_gh_post_cta_button":"","_gh_post_recirc_hide":"","_gh_post_recirc_col_1":"","_gh_post_recirc_col_2":"","_gh_post_recirc_col_3":"","_gh_post_recirc_col_4":"","_featured_video":"","_gh_post_additional_query_params":"","footnotes":"","_links_to":"","_links_to_target":"","primary_cta":"","primary_cta_url":"","secondary_cta":"","secondary_cta_url":""},"label":[2765],"group":[3865],"coauthors":[3100],"class_list":["post-96914","changelog","type-changelog","status-publish","hentry","changelog-type-deprecations","changelog-label-copilot","changelog-group-06-2026"],"yoast_head":"\nUpcoming deprecation of Opus 4.6 (fast) - 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Model<\/th>\n

Deprecation date<\/th>\n

Suggested alternative<\/th>\n<\/tr>\n<\/thead>\n

Opus 4.6 (fast)<\/td>\n

6-29-2026<\/td>\n

Opus 4.8 (fast)<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/content-table-wrap><\/div>\n

Please update your workflows and integrations to use the supported model before these dates. Copilot Enterprise administrators may need to enable access to the alternative model through their model policies in Copilot settings. As an administrator, you can verify availability by checking your individual Copilot settings and confirming that the policy is enabled for the specific model. Once enabled, you’ll see the model in the Copilot Chat model selector in VS Code and on github.com. No action is required to remove the model once it has been deprecated.<\/p>\n

GitHub Enterprise customers with questions or concerns are encouraged to reach out to their account manager for further assistance.<\/p>\n

Share your feedback<\/span><\/a><\/h3>\n
To learn more about the models available in Copilot, see our documentation on models<\/a> and get started with Copilot today.<\/p>\n
Join the GitHub Community<\/a> to share your feedback.<\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"
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