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GPT Image 2.5 Flare vs Z.ai: GLM 5.2

Try both on us. Starter credit covers your first requests, then one key routes GPT Image 2.5 Flare and GLM 5.2. Switch by changing the model name.

Compare routesProviders, price, context, and policy posture in one view.

Use auto when uptime mattersKeep a primary model and let fallback handle provider failures.

Same API shapeUse the OpenAI client and set the model you want.

Practical read

Monthly evidence

Z.ai: GLM 5.2 has the lower published input-plus-output rate and more Credits provider routes. There is not enough recent probe data to compare speed.

$36.925/1MGPT Image 2.5 Flare cheapest route

$2.2999/1MZ.ai: GLM 5.2 cheapest route

not enough dataGPT Image 2.5 Flare fastest measured p50 TTFT

943 msZ.ai: GLM 5.2 fastest measured p50 TTFT via friendli

The price comparison adds each route's rate for one million input tokens and one million output tokens; your cost depends on your input/output mix. Prices and live route measurements can change. Use the monthly reports when you need a stable evidence window, then run a small task-specific eval before choosing a production default.

GPT Image 2.5 FlareZ.ai: GLM 5.2

Model idopenai/gpt-image-2.5-flarez-ai/glm-5.2

Publisher OpenAI Z.AI

AI IQ — IQ 118#48

Context0 tokens1,048,576 tokens

Credits provider routes132

Cheapest route$36.925/1M$2.2999/1M

Cached input$1.31875/1M$0.131875/1M to $0.84611/1M

Privacy posturehas ZDR routehas Confidential route (E2EE + ZDR)

Fastest measured p50 TTFTnot enough data943 ms via friendli

Highest measured throughputnot enough data187 tok/s via venice

Recent route uptime rangenot enough data85.71% to 100.00%

Modes chat

GPT Image 2.5 Flare routes

Overview1 Credits routes

Z.ai: GLM 5.2 routes

Overview32 Credits routes
PricingInput, cached input, and output rates
BenchmarksTrustedRouter and external sources
ProvidersAll serving providers

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Production choice

Pick a default model. Keep fallback enabled.

TrustedRouter is useful when you know the model you want, but still need provider rollover, budget limits, usage records, and a prompt path you can verify.

Questions

Which should I use, GPT Image 2.5 Flare or Z.ai: GLM 5.2?

Z.ai: GLM 5.2 has the lower published input-plus-output rate and more Credits provider routes. There is not enough recent probe data to compare speed.

Is GPT Image 2.5 Flare or Z.ai: GLM 5.2 cheaper?

The current cheapest TrustedRouter route is $36.925/1M for GPT Image 2.5 Flare and $2.2999/1M for Z.ai: GLM 5.2. The comparison uses current catalog prices and updates as provider pricing changes.

Is GPT Image 2.5 Flare or Z.ai: GLM 5.2 faster?

Current measured p50 time to first token is not enough data for GPT Image 2.5 Flare and 943 ms for Z.ai: GLM 5.2. These are routed probe measurements, not vendor-advertised speeds, and update as new samples arrive.

Can I test GPT Image 2.5 Flare and Z.ai: GLM 5.2 with the same API?

Both use the same TrustedRouter base URL and API key. At least one of them is not a chat model, so the request can differ as well as the model id: the API docs list the route for each kind of model.