All models
Head to head
GLM-5.1 vs Meta Muse Spark 1.3
Price, context, inputs and filters. No benchmarks theatre.
Both cost about the same per message.
Meta Muse Spark 1.3 holds 5.1× more context.
Made by
Z.AI
Meta
Content tier
Open
Open
Intelligence
Brilliant
Smart & Cheap
Estimated price per message
~3.77 credits≈ 26 messages for 1 €
~3.43 credits≈ 29 messages for 1 €
Context window
205K tokens≈ 315 pages of text in one go
1M tokens≈ 1,613 pages of text in one go
Reads
Text
Text, Images, Video
Writes
Text
Text
Tool use
Yes - search, memory, code and more
Yes - search, memory, code and more
Served via
OpenRouter, Unbottled AI
OpenRouter, Unbottled AI
Status
Legacy
Current
A typical message: 16K tokens in, 1.5K out. Short replies cost less. Models served via OpenRouter bill the real provider cost plus our markup, so actual charges vary. 1 credit = 0.01 €.