Reflection: Beam 1.0 (free)
Beam 1.0 (free) is a reasoning model from Reflection released on Aug 26, 2025. It reads text and writes text, with a 1.05M token context window and up to 131K tokens per reply.
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It costs $0 per million input tokens and $0 per million output tokens.
It supports tool calling and prompt caching.
- Modalities
- In / out price
- $0 / $0 per 1M
- Context
- 1.05M
- Max output
- 131K
- Released
- Aug 26, 2025
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Beam 1.0 (free) pricing
USD, as listed on Oct 22, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $0 / 1M tokens | |
|---|---|---|
| Output | $0 / 1M tokens | |
| Cached input (read) | $0 / 1M tokens |
What Beam 1.0 (free) costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call Beam 1.0 (free) through an OpenAI compatible API.
- Tools
tools - Reasoning
reasoning - Temperature
temperature
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Beam 1.0 (free) questions
How much does the Beam 1.0 (free) API cost?
$0 per million input tokens and $0 per million output tokens, with cached input at $0. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Beam 1.0 (free)?
1,048,576 tokens of input, and it can write up to 131,072 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Does Beam 1.0 (free) support tool calling?
Yes. It accepts tool definitions, which is what an agent needs to call your APIs.
Is Beam 1.0 (free) open source?
No. Reflection serves it through an API only, so you cannot download the weights or host it yourself.
When was Beam 1.0 (free) released?
Aug 26, 2025.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 22, 2026. The summary is written from these facts.