AI Coding Live News — Real-Time 𝕏/Twitter Updates & Breakthroughs

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OpenAI Codex 0.159.1: GPT-6.1 Sol becomes default; Bedrock Mantle & Runtime catalogs updated

OpenAI Codex CLI shipped rust-v0.159.1 on 2026-09-29 (npm @openai/[email protected]): GPT-6.1 Sol is now the default in the bundled catalog and Amazon Bedrock Mantle/Runtime catalogs (API id gpt-6.1-sol). Official pricing $2/$10 per 1M tokens (cached input $0.10), 1.05M context, 128k max output. ~3 commits / 29 files vs v0.159.0.

Key Takeaways

Release rust-v0.159.1; ~3 commits / 29 files vs v0.159.0
Default model is GPT-6.1 Sol in bundled + Bedrock Mantle/Runtime catalogs (#49323, #49342)
Pricing: $2/$10 per 1M, cached input $0.10; 1.05M context / 128k max out
Supports Responses tools, computer use, MCP, Skills; reasoning.effort low→max
Upgrade: npm i -g @openai/[email protected]; docs at developers.openai.com/codex

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Linked Models & Agents:

⚡ GPT-6.1 Sol ⚡ GPT-6.1 Sol 🤖 Codex 🌐 OpenAI 🌐 Amazon Bedrock

#OpenAI#Codex#gpt-6.1-sol#CLI#Coding agent#Bedrock#Release

LangChain@LangChainAI·Collected 37d ago

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LangChain 1.4.3: Bedrock Mantle in init_chat_model, GPT-6 structured-output recognition, create_agent repairs invalid tool calls

LangChain shipped langchain==1.4.3 on 2026-09-28 (on PyPI): init_chat_model supports AWS Bedrock Mantle chat models via langchain-aws Mantle interfaces; recognizes GPT-6 structured output without profiles; create_agent emits error ToolMessages for invalid tool calls missing results on replay; sanitizes cache settings for fallback models. Key PRs: #40837, #40844, #40530, #40886 vs 1.4.2.

Key Takeaways

langchain==1.4.3 on PyPI (2026-09-28)
init_chat_model + Bedrock Mantle (#40837) via langchain-aws Mantle chat wrappers
GPT-6 structured output recognized without profiles (#40844)
create_agent repairs invalid tool calls with error ToolMessages (#40530); sanitize fallback cache settings (#40886)

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Linked Models & Agents:

⚡ GPT-6⚡ Bedrock Mantle🤖 create_agent 🤖 LangChain agents 🌐 langchain 🌐 aws 🌐 OpenAI

#LangChain#Bedrock Mantle#GPT-6#create_agent#Tool calling#Structured output

Anthropic@AnthropicAI·Collected 40d ago

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Claude Code 2.1.283: availableModelsMatch/deniedModels controls, gateway prompt-id headers, /doctor prompt-audit

Claude Code v2.1.283 (2026-09-25) adds availableModelsMatch=exact and deniedModels for managed model allow/deny lists, opt-in x-claude-code-prompt-id gateway hint headers, /doctor prompt-audit for CLAUDE.md/skills/agents/commands, plus Bedrock Mantle upstream and load_test_mode on the Apps Gateway. npm @anthropic-ai/claude-code 2.1.283 is live.

Key Takeaways

Shipped: GitHub v2.1.283 = npm @anthropic-ai/[email protected]
Governance: availableModelsMatch=exact pins exact model versions; deniedModels blocks models even if allowlisted
Observability: CLAUDE_CODE_GATEWAY_HINT_HEADERS=1 adds x-claude-code-prompt-id; OTEL_LOG_TOOL_CONTENT=1 logs tool outputs on spans
Audit: /doctor prompt-audit (alias /checkup) reviews CLAUDE.md, skills, agents, commands for older-model patterns
Gateway: Bedrock Mantle upstream + opt-in load_test_mode for signed canned replies

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Linked Models & Agents:

⚡ Claude Sonnet⚡ Claude Haiku🤖 Claude Code (Anthropic)🌐 Anthropic 🌐 Amazon Bedrock

#Claude Code#Anthropic#MCP#Gateway#Bedrock Mantle#OTEL#Enterprise#CLI