GPT-5.5 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 GPT-5.5 and Qwen3 Coder Flash.
GPT-5.5
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...
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 | GPT-5.5 | Qwen3 Coder Flash |
|---|---|---|
| Provider | OpenAI | Alibaba |
| Context Window | 1,050,000 tokens | 1,000,000 tokens |
| Agent Suitability | 95/100 | N/A |
| Time to First Token (TTFT) | 380 ms | N/A |
| Deployment Model | managed api | self hostable |
| Production Stability | stable | beta |
| API Available | Yes | Yes |
| Released Date | 2026-04-24 | 2025-09-17 |
API Pricing Comparison
Input Price per Million Tokens
GPT-5.5
$5.00
Qwen3 Coder Flash
$0.20
Output Price per Million Tokens
GPT-5.5
$30.00
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.
GPT-5.5 Quirks & Gotchas
- ▸Best for JSON schema adherence — strict mode available via response_format parameter
- ▸Requires explicit tool_choice for deterministic function calling
Qwen3 Coder Flash Quirks & Gotchas
No developer gotchas reported.