Data points: 55
The readout for GPT-5.3 Codex and Qwen3.5 Max, before the detailed comparison sheet.
Decision read
GPT-5.3 Codex
GPT-5.3 Codex currently has the stronger profile, with verified wins split 6 to 0.
Evidence depth
55 data points
Includes 0 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.3 Codex
The charts below split 7 high-signal samples across speed, scores, and audit health.
Switch either side of this report to compare another model with the same LMSpeed data pipeline.
Select a different model to open a new comparison URL.
Model compare GPT-5.3 Codex vs Qwen3.5 Maxgpt-5-3-codex-vs-qwen3-5-max | Model A GPT-5.3 Codex | Model B Qwen3.5 Max |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 6 wins | 0 wins |
| Where it leads | Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage, Recent tests |
Third-party benchmark profile synced into LMSpeed; only metrics available for both models are shown.
Compare benchmark category scores on a 0-100 scale. Select a category to inspect the gap.
Avg. score
GPT-5.3 Codex
67.6
Avg. score
Qwen3.5 Max
-
Selected category
Agents
GPT-5.3 Codex
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
No shared professional benchmark scores are available yet.
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.3 Codex | Qwen3.5 Max |
|---|---|---|
| No completed audits are available from shared providers yet. | ||
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | GPT-5.3 Codex | Qwen3.5 Max |
|---|---|---|
10 tests | GPT-5.3 Codex speed / latency 201 tok/s / 2135ms input / output No data |
This report only uses LMSpeed data for GPT-5.3 Codex and Qwen3.5 Max: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.3 Codex | Qwen3.5 Max |
|---|---|---|
| When to choose each model | GPT-5.3 Codex GPT-5.3 Codex is stronger when you prioritize Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage, Recent tests. | Qwen3.5 Max Qwen3.5 Max does not clearly lead on the verified metrics here, so check provider-specific pricing before choosing. |
TL;DR: GPT-5.3 Codex leads across 55 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.3 Codex vs Qwen3.5 Max into nearby model comparisons with enough verified LMSpeed data.
| No data |
| Model metadata | GPT-5.3 Codex exposes 400K tokens; notable signals: Text input, Image input, File input, Text output. | No OpenRouter metadata is available yet for this model. |
|---|---|---|
| Developer | OpenAI | No data |
| Context window | 400K tokens | No data |
| Max output | 128K tokens | No data |
| Released | Feb 2026 | No data |
| Modalities | Input TextImageFile Output Text | No data |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | None listed |
| Parameters | No data | No data |
| Tokenizer | GPT | No data |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | openai/gpt-5.3-codex | No data |
| References | No data | No data |
Qwen3.5 Max
speed / latency
N/A / N/A
input / output
No data
6i2 API5 tests | GPT-5.3 Codex speed / latency 89 tok/s / 12856ms input / output No data | Qwen3.5 Max speed / latency N/A / N/A input / output No data |
|---|
91VIP5 tests | GPT-5.3 Codex speed / latency 35 tok/s / 17640ms input / output No data | Qwen3.5 Max speed / latency N/A / N/A input / output No data |
|---|
AI Claw API5 tests | GPT-5.3 Codex speed / latency N/A / N/A input / output No data | Qwen3.5 Max speed / latency 31 tok/s / 29330ms input / output No data |
|---|
42公益站0 tests | GPT-5.3 Codex gpt-5.3-codex(xhigh) speed / latency N/A / N/A input / output $2.00/M / $16.00/M | Qwen3.5 Max qwen3.5-max-2026-03-08 speed / latency N/A / N/A input / output $150.00/M / $150.00/M |
|---|
GPT-5.3 Codex gpt-5.3-codex-spark speed / latency No data input / output $1.75/M / $14.00/M | Qwen3.5 Max qwen/qwen3.5-max speed / latency No data input / output $1.20/M / $6.00/M |
GPT-5.3 Codex gpt-5.3-codex speed / latency No data input / output $75.00/M / $600.00/M | Qwen3.5 Max qwen3.5-max-2026-03-08 speed / latency No data input / output $75.00/M / $75.00/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
