# Beam 1.0 501B A23B

[Canonical model page](https://headlessthrones.com/models/reflection-beam-1-0-501b-a23b) · [Model library](https://headlessthrones.com/models)

Public catalog reference from Headless Thrones. Exact catalog ID: `reflection-beam-1-0-501b-a23b`. Catalog source-check date: 2026-10-23.

This brief contains the public catalog answers and any catalog guide, not private drafts, historical editorial revisions or independently measured rankings. The canonical HTML page may also display separately published editorial.

Current catalog answers

## What to know about Beam 1.0 501B A23B

AI-compiled from linked model documentation. This is a catalog reference, not an independent performance review. Catalog checked October 23, 2026.

[Exact model](https://headlessthrones.com/models/reflection-beam-1-0-501b-a23b#model-answer-identity) · [Access](https://headlessthrones.com/models/reflection-beam-1-0-501b-a23b#model-answer-access) · [Token limits](https://headlessthrones.com/models/reflection-beam-1-0-501b-a23b#model-answer-context) · [Dates & knowledge](https://headlessthrones.com/models/reflection-beam-1-0-501b-a23b#model-answer-dates) · [Inputs & outputs](https://headlessthrones.com/models/reflection-beam-1-0-501b-a23b#model-answer-modalities) · [License](https://headlessthrones.com/models/reflection-beam-1-0-501b-a23b#model-answer-license)

### Which Beam 1.0 501B A23B does this page describe?

Beam 1.0 501B A23B is a model record from **Reflection** in the Beam family. [Source](https://developers.reflection.ai/models)

The recorded model identifier or checkpoint is `Beam-1.0-501B-A23B`. Use that exact identifier when checking documentation or a provider listing. [Source](https://developers.reflection.ai/models)

### How can you access Beam 1.0 501B A23B?

The catalog documents **API and Open weights** access  for Beam 1.0 501B A23B. [Source](https://developers.reflection.ai/models)

As of the catalog check, this version was listed as available. [Source](https://developers.reflection.ai/models)

For API use, confirm the exact model identifier, your account and region, and the endpoint's current limits in the linked documentation. An API listing does not establish access through a consumer subscription.

Open weights means the model weights are distributed for use under their stated terms. It does not establish a hosted API, an open-source license, or a hardware requirement. This record documents API access separately.

### What are Beam 1.0 501B A23B's context and output limits?

The documented **context window is 1,048,576 tokens**. [Source](https://developers.reflection.ai/models)

The documented **maximum output is 131,072 tokens**. [Source](https://developers.reflection.ai/models)

Context, input and output limits describe different constraints. Do not add the figures together to infer a larger window. Check the endpoint's accounting for conversation history, system instructions, tools, media and generated tokens; a documented maximum is not a guarantee of answer quality or a measured usable capacity.

### What dates are documented for Beam 1.0 501B A23B?

**Knowledge cutoff: June 30, 2026.** [Source](https://developers.reflection.ai/models) This labels the documented knowledge boundary; it is not a promise that every earlier fact is known or correct.

**Release date: October 16, 2026.** [Source](https://reflection.ai/blog/beam-is-available) This is a release milestone, not a knowledge or training cutoff. The source labels this “Public open-weight release.”

Retrieval or web tools can supply newer information at run time. That does not change the model's recorded training or knowledge dates, and this record does not establish that a particular endpoint includes those tools.

### What can Beam 1.0 501B A23B receive and generate?

Documented inputs: **text**. [Source](https://developers.reflection.ai/models)

Documented outputs: **text**. [Source](https://developers.reflection.ai/models)

Input support and output generation are separate capabilities. Reading an image does not establish image generation; a text output listing does not establish speech output. File sizes, formats and media limits depend on the documented implementation.

### What license is recorded for Beam 1.0 501B A23B?

The recorded license label is **Apache-2.0**. [Source](https://reflection.ai/blog/beam-is-available)

Read the linked license and associated use terms for this exact version before redistribution, commercial deployment or fine-tuning. A label alone does not establish every permission, restriction or obligation, and it does not determine the terms of a separate hosted service.

**Catalog qualifications:** Public API documentation example supplies exact context/output integers; organization defaults and limits can differ. Open-weight release is separate from API created date.

**Evidence still missing here:** complete input/output pricing and tested hardware requirements. Missing documentation is not evidence that a feature is unavailable.

Headless Thrones has not independently benchmarked this model for this reference. Evaluate it on representative work before choosing it; these facts do not rank its accuracy, reliability, speed or suitability against another model.