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Compare Beam 1.0 vs Mercury 3: Price, Context, Weights

Beam lists $0.30 in and $1.00 out at context 1048576 with an official Hub repo. Mercury 3 lists $0.10 in and $0.35 out at context 1000000, with no official Hub repo that day.

Choosing between Reflection Beam 1.0 and Inception Mercury 3 starts with three checkable facts: the OpenRouter list price, the context length, and whether Hugging Face has official weights.

The query is Beam 1.0 vs Mercury 3 price, context, and official weights. Figures are from the 2026-10-21 fetch of OpenRouter https://openrouter.ai/api/v1/models and Hugging Face model search. The shaded right column is layout only, not a recommendation.

Read the list price Compare context Check the Hub repo

List price and context

OpenRouter stores price as USD per token. The table multiplies by 1,000,000, so each cell is USD per 1,000,000 tokens. Beam 1.0 is reflection/beam-1.0-501b-a23b with context 1048576. Mercury 3 is inception/mercury-3 with context 1000000. The gap is 48576 tokens.

Item Reflection Beam 1.0 Inception Mercury 3
OpenRouter ID reflection/beam-1.0-501b-a23b inception/mercury-3
context_length 1048576 1000000
Input / 1,000,000 tokens $0.30 $0.10
Output / 1,000,000 tokens $1.00 $0.35
Cache read / 1,000,000 tokens $0.04 $0.01
Hugging Face official repo reflection/Beam-1.0-501B-A23B No official repo in the 2026-10-21 search
Downloads / likes / createdAt 2930 / 186 / 2026-10-07 No official repo to read
$0.30
Beam input USD / 1M tokens
$0.10
Mercury 3 input USD / 1M tokens
48576
Context gap in tokens
OpenRouter pricing USD/token × 1000000 = USD per 1,000,000 tokens
Beam 1.0  prompt 0.0000003 → 0.30   completion 0.000001 → 1.00   cache read 0.00000004 → 0.04
Mercury 3 prompt 0.0000001 → 0.10   completion 0.00000035 → 0.35  cache read 0.00000001 → 0.01
context_length  Beam 1048576   Mercury 1000000   gap 48576
HF 2026-10-21  reflection/Beam-1.0-501B-A23B  downloads 2930  likes 186  createdAt 2026-10-07
HF search Mercury-3: no official Inception Mercury 3 repository

Official weights on Hugging Face

A Beam-1.0 search the same day returns the official repo reflection/Beam-1.0-501B-A23B: 2930 downloads, 186 likes, createdAt 2026-10-07, model-card license apache-2.0. Quantized copies also appear; use this repo when you mean the official weights. A Mercury-3 search, and a listing for author inception, did not return an official Inception Mercury 3 repository. Other hit titles that merely contain “Mercury” are not that model’s official weights.

Beam official repo
reflection/Beam-1.0-501B-A23B. On 2026-10-21: 2930 downloads, 186 likes, createdAt 2026-10-07, license apache-2.0.
Mercury 3 official repo
The Hugging Face search on 2026-10-21 did not return an official Inception Mercury 3 repository. This page records that day’s Hub result only.
How to read the price
Input: Beam $0.30, Mercury 3 $0.10. Output: Beam $1.00, Mercury 3 $0.35. Cache read: Beam $0.04, Mercury 3 $0.01. All figures are per 1,000,000 tokens.

Check the numbers again

  1. 1

    Open the two OpenRouter IDs

    Find reflection/beam-1.0-501b-a23b and inception/mercury-3. Note context_length, pricing.prompt, pricing.completion, and pricing.input_cache_read.

  2. 2

    Multiply USD per token by 1,000,000

    Raw values on 2026-10-21: Beam input 0.0000003, output 0.000001, cache read 0.00000004; Mercury 3 input 0.0000001, output 0.00000035, cache read 0.00000001. That is the table: $0.30 / $1.00 / $0.04 and $0.10 / $0.35 / $0.01.

  3. 3

    Search Hugging Face again

    For Beam, use reflection/Beam-1.0-501B-A23B. For Mercury 3, see whether an official Inception repo appears; it did not on 2026-10-21. List prices can change, so trust a fresh fetch.

What this table does not say

01

List price is not a quality rank

Mercury 3’s input and output list prices are lower. That is the OpenRouter list price that day. This page has no latency, throughput, or benchmark score.

02

Context is close, not equal

1048576 and 1000000 both sit near one million tokens. The difference is 48576 tokens. Do not describe either side as unlimited context.

03

A Hub repo is not a score

Beam had a named official-weights repo that day. Mercury 3 did not show one in search. That does not prove there is no other distribution channel. It records this Hub search.

Compare only three things: OpenRouter USD per 1,000,000 tokens, context_length, and whether Hugging Face listed official weights on 2026-10-21.

To spread this table out with someone else, start from the rtcroom home page。 Open the guide How a canvas stays on one page

Questions

Does Mercury 3 have official weights on Hugging Face?

A Mercury-3 search on 2026-10-21 did not return an official Inception Mercury 3 repository. The author listing for inception was empty that day.

Which repo is the official Beam 1.0 weights?

reflection/Beam-1.0-501B-A23B. That day’s read: 2930 downloads, 186 likes, createdAt 2026-10-07, license field apache-2.0.

Why does the output gap look larger than the input gap?

Per 1,000,000 tokens, input is $0.30 versus $0.10 and output is $1.00 versus $0.35. Still a list price, not a quality or speed result. Cache read is separate: $0.04 versus $0.01.

Are there benchmark scores or latency figures here?

No. No leaderboard score, no latency, and the OpenRouter created timestamp is not written up as a launch-event date.

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