GLM-5.1 vs GPT-5.6 Terra Pro.
model vs model · prices as of
GLM-5.1 takes 3 of 5 rounds against GPT-5.6 Terra Pro. It is also the cheaper of the two to run, at $3.50 per million tokens against $9.
Z.aiwins 3 roundsGLM-5.1
$3.50/M tokens
cheapest we can explain, at Crof · $0.399 per 1,000 pages
200k context · tool calling · open weights
OpenAIGPT-5.6 Terra Pro
$9/M tokens
OpenAI list price, nothing below it is accounted for · $0.96 per 1,000 pages
1.1M context · tool calling · reads images
List price in (lower wins)
$1.40/M
$1/M
List price out (lower wins)
$4.40/M
$6/M
Cheapest we can explain (lower wins)
$3.50/M at Crof
none below list
Standard price (lower wins)
$8.60/M
$9/M
Cost per 1,000 pages (lower wins)
$0.399
$0.96
Context
200k tokens
1.1M tokens
Open weights
yes
not stated
Tool calling
yes
yes
Structured output
yes
yes
Reads images
no
yes
Reasoning
yes
yes
Released
7 Apr 2026
9 Jul 2026
Providers selling it
67
8
Price we measure against
the maker's own
the maker's own
Trains on your prompts (no is better)
not stated
no provider to check
Providers selling both · 6
NanoGPT$4.85 / $18
Nous Portal$5.93 / $18
OpenRouter$5.93 / $18
LLMTR$7.74 / $18
302.AI$8.60 / $18
Kilo Gateway$8.60 / $18
GLM-5.1 then GPT-5.6 Terra Pro, per million tokens
Go further
Add a third or fourth model, or switch the weighting, in the tool.
What moved in the last seven days
- GLM-5.1
Baidu$0.96 / $3.03 $1.40 / $4.4045% dearer · - GLM-5.1
Charm Hyper$1.32 / $4.31 $1.36 / $4.271.0% dearer · - GLM-5.1
io.net Intelligence$1.32 / $4.31 $1.36 / $4.271.0% dearer · - GLM-5.1Nous Portal$0.77 / $2.43 $0.97 / $3.0425% dearer ·
- GLM-5.1
Requesty$1.40 / $4.40 $1.05 / $3.5023% cheaper · - GLM-5.1
Venice$1.54 / $4.84 $1.40 / $4.409% cheaper · - GPT-5.6 Terra ProOpenAIOpenAI's list price, in and out per million tokens$2 / $12 $1 / $650% cheaper ·
- GPT-5.6 Terra ProNous Portal$1.60 / $9.60 $2 / $1225% dearer ·
Frequently asked
- Which is cheaper, GLM-5.1 or GPT-5.6 Terra Pro?
- GLM-5.1, at $3.50 per million tokens against $9 for GPT-5.6 Terra Pro, three parts input to one part output, read on 16 Sept 2026.
- Where is each one cheapest?
- GLM-5.1: $3.50 at Crof. GPT-5.6 Terra Pro: nobody goes below the maker's own price with a reason we can point at, so $9 is the number to beat.
- Can I buy both from one provider?
- Yes. 6 providers sell both: NanoGPT, Nous Portal, OpenRouter, LLMTR, 302.AI, Kilo Gateway. The cheapest of them for the two together is NanoGPT.
- Which holds more context?
- GPT-5.6 Terra Pro, at 1.1M tokens against 200k.
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.