GPT-5 Pro vs Quasar Alpha
Compare GPT-5 Pro by OpenAI against Quasar Alpha by OpenRouter, context windows of 400K vs 1.0M, tested across 2 shared challenges. Updated February 2026.
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GPT-5 ProvsQuasar Alpha
2 challenges
Why GPT-5 Pro?
6 months newerOct 2025
Why Quasar Alpha?
2.5x more context1.0M
2 / 2
SVG Layout Challengeimage generation
Tests an AI's ability to generate vector graphics
Quasar Alpha
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2 / 2
World Map SVGimage generation
Tests an AI's ability to create a detailed world map in SVG format
GPT-5 Pro
Quasar Alpha
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2 of 2