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  5. GLM 5.3 Flashvso1
Updated Aug 2026

GLM 5.3 Flashvso1

GLM 5.3 Flash is cheaper than o1 at $0.15/M vs $15/M input tokens.

GLM 5.3 Flash and o1 compared across 15 shared prompts
SpecGLM 5.3 Flasho1
Input price$0.15/M tokens$15/M tokens
Output price$0.5/M tokens$60/M tokens
Context window1.3M tokens128K tokens
WeightsOpenClosed
Free API (OpenRouter)NoNo
ReleasedAug 2026Dec 2024
Our Verdict
GLM 5.3 Flash
GLM 5.3 Flash
o1
o1Runner-up

Not enough votes to call it. On the specs, GLM 5.3 Flash has the edge: bigger model tier, newer, bigger context window.

GLM 5.3 Flash costs 120x less per token.

Slight edge
API pricing

Cost per 1M tokens

GLM 5.3 Flash
Input
$0.15
100× cheaper
Output
$0.50
120× cheaper
o1
Input
$15.00
Output
$60.00

GLM 5.3 Flash is cheaper on both: 100× input, 120× output.

Where to run it

31 hosts, cheapest first

GLM 5.3 Flash30 hosts
HostInOutContextUptime
DDeepInfrafp4$0.07 in·$0.25 out·1M·99.1% upGGMI Cloudfp8$0.07 in·$0.25 out·1M·99.2% upMMorph$0.08 in·$0.28 out·1M·100% upIInferenceNetfp4$0.09 in·$0.28 out·1M·97.2% upWWafer$0.10 in·$0.35 out·1M·99.8% upOOpenInferencefp4$0.10 in·$0.50 out·1M·98.1% up
24 more hostsFewer hosts
RRelace$0.11 in·$0.36 out·1M·99.7% upPPhalafp8$0.13 in·$0.42 out·1M·99.4% upNNovitafp8$0.13 in·$0.44 out·1M·99.4% upSStreamLakefp8$0.14 in·$0.47 out·1M·99% upSSail Researchfp8$0.14 in·$0.47 out·1M·98.9% upAAtlasCloudfp8$0.15 in·$0.50 out·1M·99.6% upBBasetenfp8$0.15 in·$0.50 out·1M·99.1% upCloudflare Workers AI$0.15 in·$0.50 out·1.3M·99.8% upCCoreWeavenvfp4$0.15 in·$0.50 out·1M·99.5% upDDigitalOcean$0.15 in·$0.50 out·1M·94.1% upFFireworks$0.15 in·$0.50 out·1M·99.1% upFFriendli$0.15 in·$0.50 out·1M·98.7% upIInceptronfp8$0.15 in·$0.50 out·1M·98.2% upIio.netfp8$0.15 in·$0.50 out·262k·99.1% upNNear AIfp8$0.15 in·$0.50 out·1M·98.9% upPParasailfp8$0.15 in·$0.50 out·1M·98.8% upRRekafp8$0.15 in·$0.50 out·262k·98.9% upSSiliconFlowfp8$0.15 in·$0.50 out·1M·99.7% upTTogether$0.15 in·$0.50 out·1M·99.5% upVVenice$0.15 in·$0.50 out·1M·98.7% upZ.aifp8$0.15 in·$0.50 out·1M·96.6% upNNextBitfp8$0.18 in·$0.60 out·1M·98% upModalfp8$0.45 in·$1.50 out·1M·99.6% upCCrusoefp4degraded$0.15 in·$0.50 out·1M·93.1% up
o11 host
HostInOutContextUptime
OpenAI$15.00 in·$60.00 out·200k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

GLM 5.3 Flash is developed by Zhipu AI while o1 is developed by OpenAI. GLM 5.3 Flash has a 1.3M token context window vs o1's 128K. You can compare their actual outputs across 15 challenges on Rival to see how they differ in practice.

It depends on your use case. GLM 5.3 Flash and o1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 15 challenges so you can judge which fits your needs best.

GLM 5.3 Flash costs $0.15/M input tokens and o1 costs $15/M input tokens. GLM 5.3 Flash is $14.85/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of GLM 5.3 Flash and o1 across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Keep exploring

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Same lab, same size, long tail

GLM 5.3 Flash logoGLM 5.3 FlashX logo
GLM 5.3 Flash vs GLM 5.3 FlashXSame lab
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GLM 5.3 Flash vs GLM 5.2Same lab
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o1 vs GPT-6 AstraSame lab
GLM 5.3 Flash logoGPT-4.1 Mini logo
GLM 5.3 Flash vs GPT-4.1 MiniCross-provider
GLM 5.3 Flash logoGPT-4.1 Nano logo
GLM 5.3 Flash vs GPT-4.1 NanoCross-provider
GLM 5.3 Flash logoGPT-4.5 logo
GLM 5.3 Flash vs GPT-4.5Cross-provider
GLM 5.3 Flash logoGPT-4o (Omni) logo
GLM 5.3 Flash vs GPT-4o (Omni)Cross-provider

Model pages

GLM 5.3 Flash logo
GLM 5.3 Flash15 outputs, specs and price
o1 logo
o159 outputs, specs and price
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