Tooling·Originally published Sep 7

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Bench v2.1.0: constitution + three-stage edit review for Claude Code, installer/CLI, 1036 tests

Dana (@MatureIntellect) shipped Bench v2.1.0: Claude Code runs under a written constitution with three-stage edit review and a tamper-evident ledger. v2.1 adds prompt caching, per-stage model control, installer/CLI, concurrency locks, weekly cost/latency reports, and 1,036 passing tests.

Key Takeaways

✓Release: Bench v2.1.0 (benchgov.com).
✓Governance: constitution + three-stage edit review + tamper-evident ledger.
✓Eng: installer/CLI, prompt caching, concurrency locks, 1036 tests, cost/latency reports.

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Release: Bench v2.1.0 (benchgov.com).

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Claude Code (Anthropic)

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Up NextOpenAI Agents API ships Auto Review, async compaction, experimental time awareness and mid-session tool updates

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About this article: compiled by the AICoder newsroom with AI assistance, based on the official and press sources cited above and checked against human-set editorial standards; vendor-reported figures are attributed as such.

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Release21d ago

Claude Code 2.1.299 adds idle compaction for 200K+ token sessions before cache expiry and fixes sandboxed writes into --plugin-dir

Anthropic released Claude Code 2.1.299 on Oct 14. A new default compacts a 200K+ token terminal conversation after about 54 idle minutes, before its one-hour prompt cache expires, so the next message doesn't reprocess everything; tune it with CLAUDE_CODE_IDLE_COMPACT_MIN_TOKENS or turn it off with "idleCompaction": false. The release also fixes sandboxed shell commands being able to write into a --plugin-dir folder whose code Claude Code reloads outside the sandbox, and adds --disallow-tools to claude plugin eval.

Pricing14d ago

OpenAI API adds 12-hour prompt caching: GPT-5.6+ models can keep shared context cached for half a day, with writes at 2.5x input and reads still at 0.1x

On Oct 20 OpenAI added 12-hour prompt caching to the Responses API: GPT-5.6 and later models can set prompt_cache_options.ttl to "12h" so instructions, tool definitions and reference material stay billed at the cached rate even when requests are hours apart. 12-hour writes cost 2.5x the ordinary input price versus 1.25x for the default 30 minutes; read rates are unchanged at 0.1x on most models and 0.05x on GPT-6.1 Sol. One request can mix 12-hour and 30-minute breakpoints.

Tooling45d ago

GitLab 19.4 expands MCP so agents can run pipelines and merge MRs with Always-ask writes

@AverageAiBro covered GitLab 19.4 expanding the GitLab MCP server beyond lookups into a full loop: save pipelines, pull job logs, open/update/review/merge MRs, work items, commits, and Ultimate vulnerability tools. The same release extends one governance model—read-only defaults to Always allow; write and delete default to Always ask—for Duo agents and third-party MCP clients.

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Bench v2.1.0: constitution + three-stage edit review for Claude Code, installer/CLI, 1036 tests

Key Takeaways

Key Decision Metrics at a Glance

Heavy Claude Code use: compare subscription limits and API bills

AI Coding Ecosystem & Action Hub

Claude Code (Anthropic)

Up Next & Recommended Stories

OpenAI Agents API ships Auto Review, async compaction, experimental time awareness and mid-session tool updates

Claude Code 2.1.299 adds idle compaction for 200K+ token sessions before cache expiry and fixes sandboxed writes into --plugin-dir

OpenAI API adds 12-hour prompt caching: GPT-5.6+ models can keep shared context cached for half a day, with writes at 2.5x input and reads still at 0.1x

GitLab 19.4 expands MCP so agents can run pipelines and merge MRs with Always-ask writes

Trending Radar

OpenAI gives ChatGPT Pro and Business subscribers up to $500 a month in API credits to build apps and agents

OpenAI unveils three AI-produced results: a claimed refutation of the Exponential Time Hypothesis, local smoothing in every dimension, and an existence proof for QCD

X discussion: viral posts claim Anthropic "quietly killed" Claude's reverse engineering with the REA toolkit after a Samsung TV firmware teardown went viral; no official statement yet

Artificial Analysis launches Coding Agent Index v2.0: FrontierCode from Cognition replaces DeepSWE, and Claude Code with Opus 5.5 leads at 61.7

Shanghai AI Lab Releases Sage-A1.5: A 35B MoE Agentic Model Advancing Long-Horizon Software and Scientific Discovery

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