# 🤖 AI Agents Weekly: Claude Haiku 5.5, Gemini Agent, Mistral Large 4, Decisions API, Personal Agent Protocol, Devin Dreaming, and More

> Source: <https://nlp.elvissaravia.com/p/ai-agents-weekly-claude-haiku-55>
> Published: 2026-10-10 14:40:28+00:00

In today’s issue:

- Anthropic ships Claude Haiku 5.5
- Google launches the Gemini agent
- Mistral previews Large 4
- OpenAI opens the Decisions API
- Meta and Sierra propose Personal Agent Protocol
- Devin gets Memory and Dreaming
- Reflection unveils Beam open model
- GPT-6 brings Intelligent UI to ChatGPT
- Hugging Face trains models across harnesses
- OpenAI releases 719 math manuscripts

And all the top AI dev news, papers, and tools.

## Top Stories

### Claude Haiku 5.5

Anthropic released Claude Haiku 5.5, which it calls its cheapest, fastest, and most capable small model to date. It targets high-volume work such as summaries, compaction, classification, and subagent tasks under Opus 5.5 and Sonnet 5.5, and costs around 75% less to run than Haiku 4.5 on average.

- **Agentic performance:** 72.4% on the OSWorld 2.1 offline subset against 15.7% for Haiku 4.5, 39.2% on Terminal-Bench 4.0 against 0.0%, and a GDPval-AA v2.1 Elo of 1620 against 735.
- **Pricing:** $0.10 input, $0.50 output, and $0.01 cache reads per million tokens for prompts up to 100K tokens, which covered about 90% of Haiku 4.5 requests. Longer prompts cost $0.50 input and $2.50 output.
- **Effort control:** It is the first Haiku model with an adjustable effort setting, so developers can trade cost for intelligence per task.
- **Wider price changes:** Sonnet 5.5 cache reads drop from $0.20 to $0.10 per million tokens, cutting its cost on most agentic work by around 20%. Max and Team subscribers get monthly API credits of $100 to $500, and the Python and TypeScript SDKs add computer use and browser use in beta.
- **Availability:** Live as`claude-haiku-5-5` on all platforms, including AWS, Google Cloud, and Azure.