GLM 5.3 Flash vs 
GPT-6 Astra Pro
GLM 5.3 Flash is cheaper than GPT-6 Astra Pro at $0.15/M vs $10/M input tokens.
Pokémon Battle UI Recreation
Pokémon battle screen you can actually click. One HTML file.
Loading the build
Loading the build
Which answer wins?
Price and specs
Not enough votes to call it. On the specs, GPT-6 Astra Pro has the edge: bigger model tier. GLM 5.3 Flash costs 100x less per token.
| Spec | GLM 5.3 Flash | GPT-6 Astra Pro |
|---|---|---|
| Input price | $0.15/M tokens | $10/M tokens |
| Output price | $0.5/M tokens | $50/M tokens |
| Context window | 1.3M tokens | 1.1M tokens |
| Weights | Open | Closed |
| Free API (OpenRouter) | No | No |
| Released | Aug 2026 | Sep 2026 |
| At 10M a month | $1.50 | $100 |
Input tokens at list price. No caching, no batch discount.
Where to run it
GLM 5.3 Flash31 hosts
- OpenInferencefp4$0.03 in$0.50 out1M99.2% up
- Relace$0.04 in$0.50 out1M99.8% up
- InferenceNetfp4$0.04 in$0.14 out1M99.4% up
- Sail Researchfp8$0.04 in$0.60 out1M99.6% up
- DeepInfrafp4$0.07 in$0.25 out1M99.7% up
- GMI Cloudfp8$0.09 in$0.30 out1M98.8% up
25 more hostsFewer hosts
- Novitafp8$0.11 in$0.38 out1M99.3% up
- AtlasCloudfp8$0.12 in$0.39 out1M98.4% up
- Inceptronfp8$0.12 in$0.45 out1M97.1% up
- Decartfp4$0.13 in$0.42 out1M99% up
- Phalafp8$0.13 in$0.42 out1M98.5% up
- StreamLakefp8$0.13 in$0.42 out1M96.5% up
- io.netfp8$0.14 in$0.46 out262k98.6% up
- Basetenfp8$0.15 in$0.50 out1M99.3% up
- CoreWeavenvfp4$0.15 in$0.50 out1M99.1% up
- Crusoefp4$0.15 in$0.50 out1M99.8% up
- DigitalOcean$0.15 in$0.50 out1M99.8% up
- Fireworks$0.15 in$0.50 out1M98.8% up
- Friendli$0.15 in$0.50 out1M99.4% up
- Modalnvfp4$0.15 in$0.50 out1M99.5% up
- Near AIfp8$0.15 in$0.50 out1M98% up
- Parasailfp8$0.15 in$0.50 out1M99.4% up
- Reka$0.15 in$0.50 out262k99.8% up
- SiliconFlowfp8$0.15 in$0.50 out1M99.2% up
- Together$0.15 in$0.50 out1M99.8% up
- Venice$0.15 in$0.50 out1M96.9% up
- Z.aifp8$0.15 in$0.50 out1M99.4% up
- Morphfp8$0.15 in$0.54 out1M92.2% up
- NextBitfp8$0.17 in$0.55 out1M100% up
- Cloudflare Workers AI$0.30 in$1.00 out1.3M99.8% up
- Wafer$0.75 in$0.50 out1M99.9% up
GPT-6 Astra Pro2 hosts
Per million tokens. Prices and uptime via OpenRouter, checked 29 Sep 2026.
Common questions
What is the difference between GLM 5.3 Flash and GPT-6 Astra Pro?
GLM 5.3 Flash is developed by Zhipu AI while GPT-6 Astra Pro is developed by OpenAI. GLM 5.3 Flash has a 1.3M token context window vs GPT-6 Astra Pro's 1.1M. You can compare their actual outputs across 5 challenges on Rival to see how they differ in practice.
Which is better, GLM 5.3 Flash or GPT-6 Astra Pro?
It depends on your use case. GLM 5.3 Flash and GPT-6 Astra Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 5 challenges so you can judge which fits your needs best.
How much does GLM 5.3 Flash cost compared to GPT-6 Astra Pro?
GLM 5.3 Flash costs $0.15/M input tokens and GPT-6 Astra Pro costs $10/M input tokens. GLM 5.3 Flash is $9.85/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.
How can I compare GLM 5.3 Flash and GPT-6 Astra Pro on Rival?
This page shows a side-by-side comparison of GLM 5.3 Flash and GPT-6 Astra Pro 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.
More comparisons
Against the newest arrivals
- GLM 5.3 Flash vs Claude Sonnet 5.5Landed Sep 2026
- GPT-6 Astra Pro vs Solar Mini 4Landed Sep 2026
- GLM 5.3 Flash vs Qwen3.8 Max PrimeLanded Sep 2026
- GPT-6 Astra Pro vs GLM 5.3 PrimeLanded Sep 2026
- GLM 5.3 Flash vs Qwen3.8 Omni FlashLanded Sep 2026
- GPT-6 Astra Pro vs Command A+Landed Sep 2026
- GLM 5.3 Flash vs Claude Opus 5.5Landed Sep 2026
- GPT-6 Astra Pro vs GPT-6 Luna ProLanded Sep 2026
Same lab, same size, long tail
- GLM 5.3 Flash vs GLM 5.3Same lab
- GLM 5.3 Flash vs GLM 5.3 FlashXSame lab
- GPT-6 Astra Pro vs GPT-6 AstraVersion compare
- GPT-6 Astra Pro vs GPT-6 Sol ProSame lab
- GLM 5.3 Flash vs GPT-5.6 TerraSame size
- GLM 5.3 Flash vs GPT-6 AstraCross-provider
- GLM 5.3 Flash vs GPT-6 LunaSame size
- GLM 5.3 Flash vs GPT-6 Luna ProSame size