Comparing 3

Gemini 3.8 FlashvsClaude Opus 5.5vsGLM 5.3 Flash

Send one prompt to every model and read the answers side by side, with speed and cost for each.

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Highlighted values are the best among your picks.

Gemini 3.8 FlashGoogle

Google's most intelligent Flash model, engineered for long-horizon software engineering, autonomous agents, and complex enterprise workflows

Claude Opus 5.5AnthropicNEW

Claude model for long-running agentic coding and knowledge work

GLM 5.3 FlashZ.ai· open weights

Native multimodal GLM model for efficient coding and long-horizon agent tasks

Intelligence
Intelligence index40.957.641.8
Price
Input, $ per 1M$0.75$4$0.15
Output, $ per 1M$3.75$20$0.50
Typical message (500 in / 250 out)$0.0013$0.0070$0.00020
Repeated input, cached$0.07 · 10× cheaper$0.20 · 20× cheaper$0.03 · 5× cheaper
Prompts over 200K tokensSame priceSame priceSame price
Limits
Context window1.05M1M1M
Longest answer66K tokens128K tokens131K tokens
Knowledge cutoffNot publishedJun 2026Not published
What it can take and do
AcceptsTextImagePDFAudioVideoTextImagePDFTextImage
Reasoning effortLow · Med · HighLow · Med · High · X-high · MaxLow · High · Max
Tool useYesYesYes
Guaranteed JSON outputYesYesYes
Availability
Released2 Sept 202622 Sept 202626 Aug 2026
Open weightsNoNoYes, can self-host
API providers offering it293676