Can I run Glm 4 5 Flash or GPT-5.2 cheaper on another provider?

Some models are available on inference providers like Together AI, Groq, and Fireworks AI at lower prices. Check each model's pricing page for the full provider comparison.

What is the context window difference between Glm 4 5 Flash and GPT-5.2?

GPT-5.2 has a larger context window at 272K tokens vs 128K. This matters for long documents, large codebases, and extended conversation histories.

Compare

Glm 4 5 Flash vs GPT-5.2

Pricing is only the shared seller matrix below. Best rates and catalog map are separate sections, so no chart is embedded in pricing. Open the calculator for the same workload on each side.

Z Ai

Model

Glm 4 5 Flash

Tool calling

Best N/A in · N/A out

Context window 128K

Pricing

OpenAI

Model

GPT-5.2

Image inputTool calling

Best $1.75 in · $14.00 out

Context window 272K

Pricing

Glm 4 5 Flash is cheaper across the board — 100% cheaper on input and 100% cheaper on output.

Estimate cost

Pricing matrix

Shared sellers only. Each row is a host that lists both models. Dollar amounts are per 1M tokens. Lowest in each pair of columns is emphasized.

Provider	Glm 4 5 Flash in	Glm 4 5 Flash out	GPT-5.2 in	GPT-5.2 out
Azure	N/A	N/A	$1.75	$14.00
Github Copilot	N/A	N/A	N/A	N/A
Gmi	N/A	N/A	$1.75	$14.00
OpenAI	N/A	N/A	$1.75	$14.00
Openrouter	N/A	N/A	$1.75	$14.00
Z Ai	N/A	N/A	N/A	N/A

Best listed rates (this pair)

Same "best row in current pricing" logic as model pages: a compact view of the lowest input and output we show for each side. This is not the seller matrix.

Catalog map · Z Ai · OpenAI

Each chart uses real catalog rows that include both list input and list output ($/1M). Larger green dots are the models on this comparison page; accent dots are other active models from that provider.

Z Ai · input vs output

Scatter chart: X = input $/M, Y = output $/M. This page's models are labeled on the green dots; hover others for detail.

ListedoutputUSD/1M

One dot per catalog row that has both list prices. Green dots are labeled with the models on this page; hover any dot for name and prices. Upper-right means higher cost on both axes ($/1M).

OpenAI · input vs output

ListedoutputUSD/1M

One dot per catalog row that has both list prices. Green dots are labeled with the models on this page; hover any dot for name and prices. Upper-right means higher cost on both axes ($/1M).

Specifications

Each column header is the full model name. Tint marks the favorable value where we compute a winner.

Spec

Glm 4 5 Flash

GPT-5.2

Context window: 128,000 tokens; 272,000 tokens
Max output tokens: 32,000 tokens; 128,000 tokens
Vision: No; Yes
Function calling: Yes; Yes
Streaming: No; No
Release date: N/A; Dec 2025

Cost calculator

Same requests, input tokens, and output tokens for both columns. Pick the provider row that matches how you buy.

Glm 4 5 Flash

GPT-5.2

Requests / day

Input tokens

Output tokens

Glm 4 5 Flash

Monthly

$0.0000

Annual

$0.0000

GPT-5.2

Monthly

$2.6K

Annual

$31.9K

Save $2.6K/month with Glm 4 5 Flash

When to pick which

Short takeaways: no cards, just the points. Validate with your own workloads.

Long-context tasks
Use GPT-5.2. Its 272K context window handles large codebases and documents better than 128K.
Long output (reports, code files)
Use GPT-5.2. Its 128K max output limit reduces the need to split requests.

Frequently asked questions

Glm 4 5 Flash is cheaper on both input and output tokens.

More comparisons

Other popular head-to-head matchups.