# OpenAI

- [OpenAI Lands on Amazon Bedrock — The Cloud That Already Houses Claude](https://sdd.sh/2026/04/openai-lands-on-amazon-bedrock-the-cloud-that-already-houses-claude.md): After Microsoft's exclusivity expired on April 27, OpenAI moved its models, Codex agent, and a new jointly built Bedrock Managed Agents runtime onto AWS. Amazon now hosts both Anthropic and OpenAI. Here's what the infrastructure power shift means for the AI coding landscape.
- [GPT-5.5 'Spud' Is OpenAI's Strongest Coding Model Yet — With One Important Asterisk](https://sdd.sh/2026/04/gpt-5.5-spud-is-openais-strongest-coding-model-yet-with-one-important-asterisk.md): OpenAI's first fully retrained base model since GPT-4.5 delivers 82.7% on Terminal-Bench 2.0 and leads on most agentic evals. But on SWE-bench Pro — the benchmark that tests real-world GitHub issue resolution — Claude Opus 4.7 still leads by 5.7 points. Here's what that split actually means.
- [OpenAI's Agents SDK Gets Sandboxed Execution and a Model-Native Harness: The Agent Infrastructure Layer Is Now Table Stakes](https://sdd.sh/2026/04/openais-agents-sdk-gets-sandboxed-execution-and-a-model-native-harness-the-agent-infrastructure-layer-is-now-table-stakes.md): OpenAI's April 15 Agents SDK update ships sandboxed execution, a model-native harness with configurable memory, provider-agnostic model support, and durable state via snapshotting. The primitives Claude Code has offered since day one are becoming the standard SDK layer. Here's what that means.
- [OpenAI Codex Goes Desktop Agent. It's Still Not Claude Code.](https://sdd.sh/2026/04/openai-codex-goes-desktop-agent.-its-still-not-claude-code..md): OpenAI's April 17 Codex update ships multi-agent desktop control, 90+ MCP plugins, and persistent memory. It's a real step forward in autonomy — built on exactly the wrong architecture.
- [MCP Dev Summit NYC 2026: Authentication Is the Crisis, OpenAI Is Now a Stakeholder](https://sdd.sh/2026/04/mcp-dev-summit-nyc-2026-authentication-is-the-crisis-openai-is-now-a-stakeholder.md): The first major Linux Foundation MCP summit signals protocol maturity — but surfaces an uncomfortable truth: 43% of MCP servers have OAuth vulnerabilities, auth is still the dominant unsolved problem, and breaking changes are coming in SDK V2.
- [MCP Crosses 97 Million Downloads: The Protocol That Won](https://sdd.sh/2026/03/mcp-crosses-97-million-downloads-the-protocol-that-won.md): Sixteen months after Anthropic published a draft spec, MCP has crossed 97 million monthly SDK downloads — and OpenAI's adoption paired with retiring the Assistants API has effectively handed MCP the crown. Here's what that means for agentic development.
- [GPT-5.3-Codex: The First AI Model That Helped Build Itself — and Got a Scary Security Rating](https://sdd.sh/2026/03/gpt-5.3-codex-the-first-ai-model-that-helped-build-itself-and-got-a-scary-security-rating.md): OpenAI's GPT-5.3-Codex was instrumental in creating itself, introduced mid-turn steering for agentic workflows, and became the first OpenAI model rated 'High capability' for cybersecurity — which means it can reliably exploit real vulnerabilities.