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Qwen3.5 Plus (02-15) vs Gemini 3.8 Flash

At a glance

Qwen3.5 Plus variant from February 2025 — optimized for balanced performance.

1M ctx$0.26/$1.56 per M

Google's most intelligent Flash model, with significant gains over 3.7 Flash across software engineering, agentic tasks, and multi-step reasoning.

1.0M ctx$0.75/$3.75 per M
Demos
All demos

No shared demos for these models yet.

AI Output
All AI outputs

No captured outputs for these models yet.

Benchmarks
See rankings
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Cheaper61%
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Specs
1M
Context
66K
Max output
Feb 2026
Released
1.0M
Context
66K
Max output
Sep 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input65%$0.26/M tokens
Output58%$1.56/M tokens
Live pricing, shown before you run
Input$0.75/M tokens
Output$3.75/M tokens
Reasoning$3.75/M tokens
Cache read$0.07/M tokens
Cache write$0.04/M tokens
Image input$0.75/M tokens
Audio input$0.75/M tokens
Web search$0.01/search
Chat with Qwen3.5 Plus (02-15)Go to model
Chat with Gemini 3.8 FlashGo to model
Frequently Asked Questions: Qwen3.5 Plus (02-15) vs Gemini 3.8 Flash▼

Which is better, Qwen3.5 Plus (02-15) or Gemini 3.8 Flash?

▼

Both Qwen3.5 Plus (02-15) and Gemini 3.8 Flash are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.

Which is cheaper, Qwen3.5 Plus (02-15) or Gemini 3.8 Flash?

▼

Qwen3.5 Plus (02-15) has a lower blended cost. Qwen3.5 Plus (02-15): $0.26 input / $1.56 output. Gemini 3.8 Flash: $0.75 input / $3.75 output.

Which has a larger context window, Qwen3.5 Plus (02-15) or Gemini 3.8 Flash?

▼

Gemini 3.8 Flash has a larger context window: Qwen3.5 Plus (02-15) supports 1M tokens vs Gemini 3.8 Flash at 1M tokens.

Do both Qwen3.5 Plus (02-15) and Gemini 3.8 Flash support vision?

▼

Yes, both Qwen3.5 Plus (02-15) and Gemini 3.8 Flash support vision/image input.

What are the key differences between Qwen3.5 Plus (02-15) and Gemini 3.8 Flash?

▼

Key differences: Qwen3.5 Plus (02-15) is significantly cheaper. Compare full specs on this page.

Which model should I choose for my use case?

▼

If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Qwen3.5 Plus (02-15) and Gemini 3.8 Flash for free on idapt.app to see which performs better for your specific needs.

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