Data points: 105
The readout for GPT-5.3 Codex and Hy3, before the detailed comparison sheet.
Decision read
GPT-5.3 Codex
GPT-5.3 Codex currently has the stronger profile, with verified wins split 3 to 1.
Evidence depth
105 data points
Includes 21 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with GPT-5.3 Codex
The charts below split 29 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 Hy3gpt-5-3-codex-vs-hy3 | Model A GPT-5.3 Codex | Model B Hy3 |
|---|---|---|
| Overall leader | Leading | Contender |
| Verified metric wins | 3 wins | 1 wins |
| Where it leads | 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
58.2
Avg. score
Hy3
53.5
Selected category
Reasoning
GPT-5.3 Codex leads by 7.5
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
GPT-5.3 Codex
winner82.0
Rank #11/127 · confidence 1 · eval date 2026-02-05
Hy3
15.0
Rank #115/127 · confidence 1 · eval date 2026-07-06
GPT-5.3 Codex
83.3 tok/s
Rank #77/139 · confidence 4
Hy3
winner196.0 tok/s
Rank #18/139 · confidence 4
GPT-5.3 Codex
81.50 s
Rank #134/139 · confidence 4
Hy3
winner11.94 s
Rank #77/139 · confidence 4
GPT-5.3 Codex
81.50 s
Rank #136/139 · confidence 4
Hy3
winner1.74 s
Rank #92/139 · confidence 4
GPT-5.3 Codex
$1.75/M
Rank #126/167 · confidence 4
Hy3
winner$0.123/M
Rank #16/167 · confidence 4
GPT-5.3 Codex
$4.81/M
Rank #138/167 · confidence 4
Hy3
winner$0.200/M
Rank #17/167 · confidence 4
GPT-5.3 Codex
$14.00/M
Rank #139/167 · confidence 4
Hy3
winner$0.430/M
Rank #20/167 · confidence 4
GPT-5.3 Codex
winner74.0
Rank #5/88 · confidence 1 · eval date 2026-02-05
Hy3
54.7
Rank #61/88 · confidence 1 · eval date 2026-07-06
GPT-5.3 Codex
winner16.9
Rank #11/72 · confidence 1 · eval date 2026-02-05
Hy3
4.6
Rank #34/72 · confidence 1 · eval date 2026-07-06
GPT-5.3 Codex
winner91.5%
Rank #11/187 · confidence 4
Hy3
86.7%
Rank #34/187 · confidence 4
GPT-5.3 Codex
winner39.9%
Rank #12/186 · confidence 4
Hy3
25.5%
Rank #42/186 · confidence 4
GPT-5.3 Codex
winner53.0
Rank #8/86 · confidence 1 · eval date 2026-02-05
Hy3
34.1
Rank #45/86 · confidence 1 · eval date 2026-07-06
GPT-5.3 Codex
winner53.2%
Rank #10/184 · confidence 4
Hy3
41.2%
Rank #54/184 · confidence 4
GPT-5.3 Codex
winner53.2
Rank #13/95 · confidence 1 · eval date 2026-02-05
Hy3
41.2
Rank #49/95 · confidence 1 · eval date 2026-07-06
GPT-5.3 Codex
winner51.8
Rank #7/89 · confidence 1 · eval date 2026-02-05
Hy3
28.0
Rank #45/89 · confidence 1 · eval date 2026-07-06
GPT-5.3 Codex
winner39.9
Rank #10/95 · confidence 1 · eval date 2026-02-05
Hy3
25.5
Rank #40/95 · confidence 1 · eval date 2026-07-06
GPT-5.3 Codex
winner91.5
Rank #11/95 · confidence 1 · eval date 2026-02-05
Hy3
86.7
Rank #36/95 · confidence 1 · eval date 2026-07-06
GPT-5.3 Codex
winner44.3
Rank #15/98 · confidence 1 · eval date 2026-02-05
Hy3
33.6
Rank #51/98 · confidence 1 · eval date 2026-07-06
GPT-5.3 Codex
86.9
Rank #23/89 · confidence 1 · eval date 2026-02-05
Hy3
86.9
Rank #23/89 · confidence 1 · eval date 2026-07-06
GPT-5.3 Codex
winner75.4
Rank #21/87 · confidence 1 · eval date 2026-02-05
Hy3
63.1
Rank #49/87 · confidence 1 · eval date 2026-07-06
GPT-5.3 Codex
86.0
Rank #42/85 · confidence 1 · eval date 2026-02-05
Hy3
winner92.7
Rank #29/85 · confidence 1 · eval date 2026-07-06
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | GPT-5.3 Codex | Hy3 |
|---|---|---|
| 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 | Hy3 |
|---|---|---|
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 Hy3: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Guidance | GPT-5.3 Codex | Hy3 |
|---|---|---|
| When to choose each model | GPT-5.3 Codex GPT-5.3 Codex is stronger when you prioritize Free providers, Provider coverage, Recent tests. | Hy3 Hy3 is stronger when you prioritize Cheapest input price. |
TL;DR: GPT-5.3 Codex leads across 105 verifiable data points, including pricing, speed, latency, benchmarks, and provider examples.
Continue from GPT-5.3 Codex vs Hy3 into nearby model comparisons with enough verified LMSpeed data.
| Cheapest input price |
| Model metadata | GPT-5.3 Codex exposes 400K tokens; notable signals: Text input, Image input, File input, Text output. | Hy3 exposes 262.1K tokens; notable signals: Text input, Text output, Tool calling, Structured outputs. |
|---|---|---|
| Developer | OpenAI | Tencent |
| Context window | 400K tokens | 262.1K tokens |
| Max output | 128K tokens | 262.1K tokens |
| Released | Feb 2026 | Jul 2026 |
| Modalities | Input TextImageFile Output Text | Input Text Output Text |
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputText outputTool callingStructured outputsJSON modeReasoning |
| Parameters | No data | No data |
| Tokenizer | GPT | Other |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | openai/gpt-5.3-codex | tencent/hy3 |
| References | No data | No data |
Hy3
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 | Hy3 speed / latency N/A / N/A input / output No data |
|---|
钠 API5 tests | GPT-5.3 Codex speed / latency 63 tok/s / 3786ms input / output No data | Hy3 speed / latency N/A / N/A input / output No data |
|---|
APDSM0 tests | GPT-5.3 Codex speed / latency N/A / N/A input / output No data | Hy3 speed / latency N/A / N/A input / output No data |
|---|
ChatST API0 tests | GPT-5.3 Codex speed / latency N/A / N/A input / output No data | Hy3 speed / latency N/A / N/A input / output No data |
|---|
GPT-5.3 Codex gpt-5.3-codex speed / latency No data input / output $0.120/M/$0.959/M | Hy3 hy3 speed / latency No data input / output $0.0096/M/$0.040/M |
GPT-5.3 Codex gpt-5.3-codex speed / latency No data input / output $1.25/M/$10.00/M | Hy3 hy3 speed / latency No data input / output $0.114/M/$0.457/M |
GPT-5.3 Codex gpt-5.3-codex-spark speed / latency No data input / output $0.625/M/$5.00/M | Hy3 Hy3 speed / latency No data input / output $37.50/M/$37.50/M |
Rankings are based on community-submitted tests and periodic health probes. Advisory only, not official data.
