# Cohere insights

Rangoon Insights reporting and guides tagged Cohere.

Canonical: https://rangoon.ai/insights/tags/cohere/

## Topics
- [Agent systems](https://rangoon.ai/insights/topics/agents/): Agent runtimes, handoffs, tools, and the boundaries that make them reviewable.
- [Governance](https://rangoon.ai/insights/topics/governance/): Policy, identity, authorization, approvals, and evidence for consequential work.
- [Infrastructure](https://rangoon.ai/insights/topics/infrastructure/): Model serving, sandboxes, tool services, and deployment boundaries.
- [Models](https://rangoon.ai/insights/topics/models/): Inference choices, local serving, compatibility, and operational tradeoffs.

## Stories
- [Cohere released Rerank 4 with Pro and Fast variants for multilingual and JSON document ranking](https://rangoon.ai/insights/archive-cohere-rerank-4-december-2025/)
  Cohere released Rerank 4.0 on December 11, 2025 with Pro and Fast variants, 32K context and stated support for multilingual and semi-structured JSON ranking.
- [Cohere released Aya Vision as an open-weight multilingual vision-language family](https://rangoon.ai/insights/archive-cohere-aya-vision-multilingual-march-2025/)
  Cohere Labs released Aya Vision on March 4, 2025, pairing 8B and 32B open-weight vision-language models with evaluation across 23 languages.
- [Cohere’s Command A Vision added image inputs with explicit request and tool-use limits](https://rangoon.ai/insights/archive-cohere-command-a-vision-july-2025/)
  Cohere released Command A Vision on July 31, 2025, adding image and text processing with a 128K-token context window and image-request limits.
- [Cohere’s Embed 4 put text, images and mixed documents in one retrieval representation](https://rangoon.ai/insights/archive-cohere-embed-4-april-2025/)
  Cohere released Embed 4 on April 15, 2025, combining mixed text-image embeddings, 128K context and selectable embedding dimensions for retrieval.
- [Cohere’s Command A paired a 256K context window with a two-GPU serving claim](https://rangoon.ai/insights/archive-cohere-command-a-march-2025/)
  Cohere released Command A on March 13, 2025, describing a 111-billion-parameter enterprise model with a 256K-token context window.
- [Cohere’s Rerank 3.5 release changed both retrieval ranking and the API contract](https://rangoon.ai/insights/archive-cohere-rerank-3-5-december-2024/)
  Cohere released Rerank v3.5 and a v2 Rerank API on December 2, 2024, adding a 4,096-token context limit and explicit model selection.
- [Aya Expanse made multilingual evaluation a release requirement, not a translation claim](https://rangoon.ai/insights/archive-cohere-aya-expanse-multilingual-2024/)
  Cohere For AI launched Aya Expanse on October 24, 2024, releasing 8B and 32B multilingual models aimed at narrowing language performance gaps.


## More information

- [Documentation index](https://rangoon.ai/llms.txt)
- [AI access and policies](https://rangoon.ai/ai/)
- [Source repository](https://github.com/hypler-dev/rangoon)