Model Comparison
GPT-5.3 Codex (xhigh)
vs. Qwen3.6 27B (Reasoning)
Comparing 2 AI models · 7 benchmarks · OpenAI, Alibaba
Recommended Pick
Op GPT-5.3 Codex (xhigh) 11 metric wins Strongest on: Throughput, Latency, Reasoning
Best Value
Qwen3.6 27B (Reasoning)
100.0 value score
50.5 reasoning / $1.35/1M
Lowest Price
Qwen3.6 27B (Reasoning)
$0.60/1M input price
Best Reasoning
GPT-5.3 Codex (xhigh)
61.7 reasoning score
Blends available reasoning benchmarks
Best for Coding
GPT-5.3 Codex (xhigh)
53.1 coding index
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Differences That Matter
Best value
Qwen3.6 27B (Reasoning) has the strongest quality-to-price mix at 100.0 out of 100 value points.
Price gap
Qwen3.6 27B (Reasoning) is 2.9x cheaper on input tokens than GPT-5.3 Codex (xhigh).
Speed gap
GPT-5.3 Codex (xhigh) generates about 1.3x as many tokens per second as Qwen3.6 27B (Reasoning).
Reasoning gap
GPT-5.3 Codex (xhigh) leads Qwen3.6 27B (Reasoning) by 11.1 points on reasoning.
Coding gap
GPT-5.3 Codex (xhigh) leads Qwen3.6 27B (Reasoning) by 16.6 points on coding.
Response Face-Off
Run one prompt through the selected models and compare response quality with live speed and cost context.
GPT-5.3 Codex (xhigh)
OpenAI
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Qwen3.6 27B (Reasoning)
Alibaba
TTFT
—
Time
—
tok/s
—
Tokens
—
Cost
—
Which answer was more useful?
Full Comparison
| Metric | Top Pick Op GPT-5.3 Codex (xhigh) | Al Qwen3.6 27B (Reasoning) |
|---|---|---|
| Pricing per 1M tokens | ||
| Input Cost | $1.75/1M | $0.60/1M |
| Output Cost | $14.00/1M | $3.60/1M |
| Blended (3:1) | $4.81/1M | $1.35/1M |
| Specifications | ||
| Organization | OpenAI | Alibaba |
| Release Date | Feb 5, 2026 | Apr 22, 2026 |
| Performance & Speed | ||
| Throughput | 75.8 tok/s | 56.9 tok/s |
| TTFT | 56109ms | 1473ms |
| Latency | 56109ms | 101182ms |
| Composite Indices | ||
| Value Score | 34.2 | 100.0 |
| Reasoning Score | 61.7 | 50.5 |
| Intelligence | 53.6 | 45.8 |
| Coding | 53.1 | 36.5 |
| Standard Benchmarks | ||
| GPQA | 91.5% | 84.2% |
| HLE | 39.9% | 21.6% |
| SciCode | 53.2% | 39.8% |
| LCR | 74.0% | 68.7% |
| IFBench | 75.4% | 67.6% |
| TAU-bench v2 | 86.0% | 94.2% |
| TerminalBench Hard | 53.0% | 34.8% |
Key Takeaways
Qwen3.6 27B (Reasoning) offers the best value at $0.60/1M, making it ideal for high-volume applications and cost-conscious projects.
GPT-5.3 Codex (xhigh) has the strongest reasoning profile with a 61.7 reasoning score, combining the available reasoning-heavy benchmarks.
GPT-5.3 Codex (xhigh) reaches a 53.1 coding index, making it the top choice for software development and code generation tasks.
All models support context windows of ∞+ tokens, suitable for processing lengthy documents and maintaining extended conversations.
When to Choose Each Model
GPT-5.3 Codex (xhigh)
- Complex reasoning tasks
- Research & analysis
- Code generation
- Software development
Qwen3.6 27B (Reasoning)
- Cost-sensitive applications
- High-volume processing
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