Which is cheaper, GLM-4.5 or Sonar?

GLM-4.5, at $1.40 per million tokens against $4 for Sonar, three parts input to one part output, read on 16 Sept 2026.

Where is each one cheapest?

GLM-4.5: $1.40 at Submodel. Sonar: nobody goes below the maker's own price with a reason we can point at, so $4 is the number to beat.

Can I buy both from one provider?

Yes. 6 providers sell both: Eden AI, Kilo Gateway, LLM Gateway, LLMTR, OpenRouter, Requesty. The cheapest of them for the two together is Eden AI.

Which holds more context?

GLM-4.5, at 131k tokens against 128k.

GLM-4.5 vs Sonar.

model vs model · prices as of 16 Sept 2026

GLM-4.5 takes 3 of 5 rounds against Sonar. It is also the cheaper of the two to run, at $1.40 per million tokens against $4.

Z.aiwins 3 rounds

GLM-4.5

$1.40/M tokens

cheapest we can explain, at Submodel · $0.168 per 1,000 pages

131k context · tool calling · open weights

Perplexity

Sonar

$4/M tokens

Perplexity list price, nothing below it is accounted for · $0.66 per 1,000 pages

128k context

List price in (lower wins)

$0.60/M

$1/M

List price out (lower wins)

$2.20/M

$1/M

Cheapest we can explain (lower wins)

$1.40/M at Submodel

none below list

Standard price (lower wins)

$4/M

Cost per 1,000 pages (lower wins)

$0.168

$0.66

Context

131k tokens

128k tokens

Open weights

yes

Tool calling

yes

Structured output

not stated

Reads images

Reasoning

yes

Released

28 Jul 2025

1 Jan 2024

Providers selling it

Price we measure against

the maker's own

Trains on your prompts (no is better)

not stated

no provider to check

Providers selling both · 6

Eden AI$2.80 / $4
Kilo Gateway$4 / $4
LLM Gateway$4 / $4
LLMTR$4 / $4
OpenRouter$4 / $4
Requesty$4 / $4

GLM-4.5 then Sonar, per million tokens

Go further

open in the compare tool →every price for GLM-4.5 every price for Sonar

Add a third or fourth model, or switch the weighting, in the tool.

What moved in the last seven days

GLM-4.5Nous Portal$0.48 / $1.76 $0.60 / $2.2025% dearer · 16 Sept 2026

Frequently asked

Which is cheaper, GLM-4.5 or Sonar?: GLM-4.5, at $1.40 per million tokens against $4 for Sonar, three parts input to one part output, read on 16 Sept 2026.
Where is each one cheapest?: GLM-4.5: $1.40 at Submodel. Sonar: nobody goes below the maker's own price with a reason we can point at, so $4 is the number to beat.
Can I buy both from one provider?: Yes. 6 providers sell both: Eden AI, Kilo Gateway, LLM Gateway, LLMTR, OpenRouter, Requesty. The cheapest of them for the two together is Eden AI.
Which holds more context?: GLM-4.5, at 131k tokens against 128k.

Prices exclude tax and are per million tokens, read 16 Sept 2026 from each provider's own catalog. The standard price blends three parts input to one part output; a page is 600 tokens in and 60 out. Bars are scaled to the larger value in each row.