Virtuoso Large vs GLM 4.5

Virtuoso Large at $0.863 in and $1.38 out and GLM 4.5 at $0.690 in and $2.53 out — per million tokens, from the same wallet.

Virtuoso Large

Arcee AI

0.54¢

for a client proposal

$0.863 in · $1.38 out / 1M

131K context · released May 2025

Full page →

GLM 4.5

Z.ai

0.55¢

for a client proposal

$0.690 in · $2.53 out / 1M

131K context · released July 2025

Full page →

Asking all both at once — identical prompt, identical context — costs about 1.1¢ for a typical client proposal.

At a glance

Cheapest input: GLM 4.5 at $0.690 per million tokens.
Cheapest output: Virtuoso Large at $1.38 per million tokens.
Identical context windows: 131K tokens each.

Cost per task

Estimated totals at the rates above. Solid bar is input, lighter bar is output.

Quick code fix

2K in · 500 out

Virtuoso Large

0.24¢

GLM 4.5

0.26¢

Draft a client proposal from notes

5K in · 800 out

Virtuoso Large

0.54¢

GLM 4.5

0.55¢

Context-heavy session (Alyph workspace)

155K in · 4K out

Virtuoso Large

needs 155K ctx

GLM 4.5

needs 155K ctx

Analyze a 50-page legal contract

35K in · 1K out

Virtuoso Large

3.2¢

GLM 4.5

2.7¢

Large architecture refactor

250K in · 3K out

Virtuoso Large

needs 250K ctx

GLM 4.5

needs 250K ctx

Solid part of each bar is input tokens, the lighter part is output. Models that don’t fit a task are marked instead of priced.

Cost vs Token Amount

Drag the slider to adjust the split between input and output workload.

80% Input20% Output

Virtuoso Large

GLM 4.5

Adjust the ratio slider to change how output tokens influence the final price for equivalent workloads.

Pricing

Virtuoso Large

GLM 4.5

Input / 1M tokens

$0.863

$0.690

Output / 1M tokens

$1.38

$2.53

Cached input / 1M

—

$0.127

Specs

Virtuoso Large

GLM 4.5

Provider

Arcee AI

Z.ai

Released

May 2025

July 2025

Context window

131K

Max output

64K

98K

Input

Text

Output

Text

Reasoning

Answers directly

Shows its thinking

Knowledge cutoff

2025-03-31

2024-12-31

Try it with real numbers

2K tokens in · 500 tokens out.

Virtuoso Large

Arcee AI

0.24¢

for this task

71% input · 29% output

Full pricing →

GLM 4.5

Z.ai

0.26¢

for this task

52% input · 48% output

Full pricing →

All 2, same prompt and context: 0.51¢. That is the entire cost of the comparison.

Your $5 welcome credit covers about 988 of these.

Which should you pick?

On price, Virtuoso Large is the cheapest of the two on a typical task, at about 0.54¢.

If you want to watch the model think, GLM 4.5 shows reasoning; the other answers directly.

Or don’t pick. Send the identical prompt to all both, read the answers side by side, and keep the winner. How to run a fair bake-off →

Virtuoso Large pricing →GLM 4.5 pricing →Add Lyria 3 Clip Preview Add Grok 4.20

Questions, answered

Which is cheaper, Virtuoso Large or GLM 4.5?

On a typical client proposal (5K tokens in, 800 out): Virtuoso Large at 0.54¢; GLM 4.5 at 0.55¢. Long prompts can change the order when long-context rates apply.

Which has the largest context window?

They are identical — 131K tokens each, about 190 pages.

Can I run Virtuoso Large and GLM 4.5 side by side on Alyph?

Yes — that is what Alyph is built for: the identical prompt with identical context to all 2, answers rendered side by side, billed from one wallet. This exact combination costs about 1.1¢ for a typical task.

Ask both at once

Identical prompt, identical context, answers side by side — about 1.1¢ for a typical client proposal. Free to start, with $5 of credit.