Claude Opus 4.5 vs Qwen3 Coder Flash
How do these models stack up? Below is an expert side-by-side comparison of specifications, context window capacity, live pricing per million tokens, and standardized benchmark scores for Claude Opus 4.5 and Qwen3 Coder Flash.
Claude Opus 4.5
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...
Qwen3 Coder Flash
Qwen3 Coder Flash is Alibaba's fast and cost efficient version of their proprietary Qwen3 Coder Plus. It is a powerful coding agent model specializing in autonomous programming via tool calling...
Technical Specifications
| Specification | Claude Opus 4.5 | Qwen3 Coder Flash |
|---|---|---|
| Provider | Anthropic | Alibaba |
| Context Window | 200,000 tokens | 1,000,000 tokens |
| Agent Suitability | 93/100 | N/A |
| Time to First Token (TTFT) | 550 ms | N/A |
| Deployment Model | managed api | self hostable |
| Production Stability | stable | beta |
| API Available | Yes | Yes |
| Released Date | 2025-11-24 | 2025-09-17 |
API Pricing Comparison
Input Price per Million Tokens
Claude Opus 4.5
$5.00
Qwen3 Coder Flash
$0.20
Output Price per Million Tokens
Claude Opus 4.5
$25.00
Qwen3 Coder Flash
$0.97
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Benchmark Performance Metrics
Scores show the raw performance percentages verified across key evaluation suites. Higher bars indicate superior accuracy and capability in that domain.
Claude Opus 4.5 Quirks & Gotchas
- ▸Deep analytical reasoning — best for structured problem-solving
- ▸200K context is limiting compared to 1M of Opus 4.6+ — upgrade for long-document tasks
Qwen3 Coder Flash Quirks & Gotchas
No developer gotchas reported.