Claude Opus 4.8 (Fast) vs Gemini 3.5 Flash Lite: side-by-side summary

Claude Opus 4.8 (Fast) and Gemini 3.5 Flash Lite are available through the OpenRouter API, so switching between them takes a model slug change rather than a new integration.

Claude Opus 4.8 (Fast), from Anthropic, has a 1,000,000-token context window and is priced by the provider serving it on OpenRouter.

Gemini 3.5 Flash Lite, from Google, has a 1,048,576-token context window and is priced at $0.30/M tokens input, $2.50/M tokens output on OpenRouter.

Context window

• Claude Opus 4.8 (Fast): 1,000,000 tokens
• Gemini 3.5 Flash Lite: 1,048,576 tokens

Price

• Claude Opus 4.8 (Fast): Pricing varies by provider
• Gemini 3.5 Flash Lite: $0.30/M tokens input, $2.50/M tokens output

Provided by

• Claude Opus 4.8 (Fast): Anthropic
• Gemini 3.5 Flash Lite: Google