Impact Briefs that explain how AI platform changes affect builders.https://caelup.comen-ushttps://caelup.com/brief/anthropic-claude-sonnet-5-breaking-request-changeshttps://caelup.com/brief/anthropic-claude-sonnet-5-breaking-request-changesMigrating to Claude Sonnet 5 requires handling adaptive thinking defaults, removal of manual extended thinking, and rejection of non-default sampling parameters.Fri, 18 Sep 2026 00:00:00 GMTAnthropicbreakinganthropicclaudesonnet-5apihttps://caelup.com/brief/cloudflare-service-key-authentication-eolhttps://caelup.com/brief/cloudflare-service-key-authentication-eolCloudflare Service Key auth stops working on September 30, 2026. Integrations using X-Auth-User-Service-Key must move to API Tokens.Fri, 18 Sep 2026 00:00:00 GMTCloudflaredeprecationcloudflareauthenticationapihttps://caelup.com/brief/cloudflare-tunnel-routes-and-connections-apihttps://caelup.com/brief/cloudflare-tunnel-routes-and-connections-apiOn October 5, 2026, Cloudflare removes CIDR-encoded Zero Trust route endpoints and the connections array from tunnel list/get responses.Fri, 18 Sep 2026 00:00:00 GMTCloudflarebreakingcloudflarezero-trusttunnelapihttps://caelup.com/brief/cloudflare-workers-kv-legacy-namespace-routeshttps://caelup.com/brief/cloudflare-workers-kv-legacy-namespace-routesLegacy Workers KV routes under /workers/namespaces stop working on October 15, 2026. Migrate path prefixes to /storage/kv/namespaces.Fri, 18 Sep 2026 00:00:00 GMTCloudflaredeprecationcloudflareworkers-kvapihttps://caelup.com/brief/github-synchronous-sbom-api-deprecationhttps://caelup.com/brief/github-synchronous-sbom-api-deprecationGitHub’s synchronous SBOM endpoint is deprecated and scheduled for removal on November 13, 2026. Migrate to the asynchronous generate-report flow.Fri, 18 Sep 2026 00:00:00 GMTGitHubdeprecationgithubsbomdependency-graphapihttps://caelup.com/brief/google-gemini-omni-flash-preview-shutdownhttps://caelup.com/brief/google-gemini-omni-flash-preview-shutdownGoogle’s gemini-omni-flash-preview endpoint is deprecated and shuts down on September 30, 2026. Migrate to gemini-omni-1.1-flash.Fri, 18 Sep 2026 00:00:00 GMTGoogledeprecationgooglegeminiomnivideohttps://caelup.com/brief/microsoft-azure-openai-gpt-4o-20240513-retirementhttps://caelup.com/brief/microsoft-azure-openai-gpt-4o-20240513-retirementAzure OpenAI gpt-4o version 2024-05-13 retires on October 1, 2026. Microsoft lists gpt-5.1 as the replacement; required action depends on Standard vs Provisioned deployment type.Fri, 18 Sep 2026 00:00:00 GMTMicrosoftdeprecationmicrosoftazurefoundryopenaigpt-4ohttps://caelup.com/brief/openai-legacy-gpt-snapshots-october-2026https://caelup.com/brief/openai-legacy-gpt-snapshots-october-2026OpenAI shuts down a batch of legacy GPT and reasoning snapshots on October 23, 2026, including gpt-4o-2024-05-13 and several fine-tuned bases.Fri, 18 Sep 2026 00:00:00 GMTOpenAIdeprecationopenaimodelsdeprecationhttps://caelup.com/brief/openai-sora-2-videos-api-shutdownhttps://caelup.com/brief/openai-sora-2-videos-api-shutdownOpenAI removes the Videos API and Sora 2 model aliases/snapshots on September 24, 2026. The deprecations table lists no replacement.Fri, 18 Sep 2026 00:00:00 GMTOpenAIdeprecationopenaisoravideos-api