Skip to main content
idapt
HomeCodeAI ModelsPricing
Sign inStart free
  • Home
  • Pricing
  • AI Models
  • Image models
  • Voice models
  • Video models
  • Rankings
  • New models
  • Model status
  • Multi-Model Chat
  • Agents
  • Computers
  • Drive
  • Automations
  • AI Gateway
  • All features →
  • LLM cost calculator
  • Token counter
  • All free tools →
  • Blog
  • Use cases
  • Comparisons
  • Best of
  • Benchmarks
  • Demos
  • Changelog
  • Help center
  • FAQ
  • Privacy
  • Compare all models
  • Support
  • idapt Code
  • Developers
  • Quickstarts
  • API reference
  • API pricing
  • CLI
  • MCP
  • Downloads
  • Desktop
  • Badges and embeds
© idapt[email protected]TermsPrivacy PolicyLegal noticeReport content
X (Twitter)

GLM 5.3 Flash vs Claude Opus 5

At a glance

Z.ai's efficient multimodal model for fast coding and long-horizon agent tasks.

1.0M ctx$0.07/$0.25 per M

Anthropic's flagship for demanding reasoning, coding, and long-horizon agentic work.

1M ctx$5.00/$25.00 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
Cheaper99%
Reasoning
CodingInsufficient data
AgenticInsufficient data
ReasoningInsufficient data
MathInsufficient data
Sources:OpenRouter
Specs
1.0M
Context
131K
Max output
Aug 2026
Released
1M
Context
128K
Max output
Jul 2026
Released
Capabilities
Vision
Audio
Reasoning
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input99%$0.07/M tokens
Output99%$0.25/M tokens
Cache read97%$0.01/M tokens
Live pricing, shown before you run
Input$5.00/M tokens
Output$25.00/M tokens
Cache read$0.50/M tokens
Cache write$6.25/M tokens
Web search$0.01/search
Chat with GLM 5.3 FlashGo to model
Chat with Claude Opus 5Go to model
Frequently Asked Questions: GLM 5.3 Flash vs Claude Opus 5▼

Which is better, GLM 5.3 Flash or Claude Opus 5?

▼

Both GLM 5.3 Flash and Claude Opus 5 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, GLM 5.3 Flash or Claude Opus 5?

▼

GLM 5.3 Flash has a lower blended cost. GLM 5.3 Flash: $0.07 input / $0.25 output. Claude Opus 5: $5.00 input / $25.00 output.

Which has a larger context window, GLM 5.3 Flash or Claude Opus 5?

▼

GLM 5.3 Flash has a larger context window: GLM 5.3 Flash supports 1M tokens vs Claude Opus 5 at 1M tokens.

Do both GLM 5.3 Flash and Claude Opus 5 support vision?

▼

Yes, both GLM 5.3 Flash and Claude Opus 5 support vision/image input.

What are the key differences between GLM 5.3 Flash and Claude Opus 5?

▼

Key differences: GLM 5.3 Flash 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 GLM 5.3 Flash and Claude Opus 5 for free on idapt.app to see which performs better for your specific needs.

Open in App