Data points: 174
Model compare
The readout for Claude Sonnet 4.6 and GPT-5.4, before the detailed comparison sheet.
Weighted outcome: GPT-5.4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5.4
GPT-5.4 has the higher weighted result; Model A / B score 15.4 to 84.6.
Evidence depth
174 data points
Includes 35 benchmark rows, 6 audit samples, and 7 provider examples.
Selection signal
Start with GPT-5.4
The charts below split 48 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.
This report only uses LMSpeed data for Claude Sonnet 4.6 and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude Sonnet 4.6 | GPT-5.4 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 15.4 pts | 84.6 pts |
| Benchmark category leads | 1 categories | 6 categories |
| Operational advantages | First-token latency | Cheapest input price, Average speed, Free providers, Provider coverage |
| Context window | 1M tokens | 1.1M tokens |
| Max output | 128K tokens | 128K tokens |
| Modalities | Input TextImageFile Output Text |
The overall result weights benchmark capability categories at 80% and price, API speed/latency, and availability at 20%. Recent test volume does not affect the winner, and missing benchmark categories are excluded.
| Model compare | Claude Sonnet 4.6 | GPT-5.4 |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Released | Feb 2026 | Mar 2026 |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | No data | No data |
| OpenRouter ID | anthropic/claude-sonnet-4.6 | openai/gpt-5.4 |
| References | No data | No data |
This report only uses LMSpeed data for Claude Sonnet 4.6 and GPT-5.4: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude Sonnet 4.6
Claude Sonnet 4.6 is stronger in benchmark categories (Knowledge) and operational dimensions (First-token latency).
GPT-5.4
GPT-5.4 is stronger in benchmark categories (Agents, Coding, Reasoning, Math, Multimodal) and operational dimensions (Cheapest input price, Average speed, Free providers, Provider coverage).
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
Claude Sonnet 4.6
53.2
Avg. score
GPT-5.4
57.4
GPT-5.4 leads by 2.8
GPT-5.4 leads by 6.8
GPT-5.4 leads by 6.5
Claude Sonnet 4.6 leads by 10.7
GPT-5.4 leads by 4.4
No data
GPT-5.4 leads by 9.2
GPT-5.4 leads by 10.5
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Sonnet 4.6
63.0
Rank #25/84 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner67.0
Rank #19/84 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
$3.00/M
Rank #137/162 · confidence 4
GPT-5.4
winner$2.50/M
Rank #131/162 · confidence 4
Claude Sonnet 4.6
$6.00/M
Rank #137/162 · confidence 4
GPT-5.4
winner$5.63/M
Rank #135/162 · confidence 4
Claude Sonnet 4.6
$15.00/M
Rank #136/162 · confidence 4
GPT-5.4
$15.00/M
Rank #136/162 · confidence 4
Claude Sonnet 4.6
57.7
Rank #63/89 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner74.0
Rank #6/89 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
0.9
Rank #60/73 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner23.4
Rank #7/73 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
winner87.5%
Rank #31/188 · confidence 4
GPT-5.4
74.8%
Rank #96/188 · confidence 4
Claude Sonnet 4.6
winner30.0%
Rank #31/187 · confidence 4
GPT-5.4
10.6%
Rank #91/187 · confidence 4
Claude Sonnet 4.6
80.6
Rank #5/12 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner85.3
Rank #1/12 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
51.5
Rank #7/33 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner67.4
Rank #3/33 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
46.9
Rank #33/96 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner56.6
Rank #4/96 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
winner63.7
Rank #8/65 · confidence 3 · eval date 2026-02-01
GPT-5.4
42.4
Rank #53/65 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
46.8%
Rank #29/185 · confidence 4
GPT-5.4
winner47.1%
Rank #24/185 · confidence 4
Claude Sonnet 4.6
32.4
Rank #18/47 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner47.6
Rank #7/47 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
8.3
Rank #19/35 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner27.1
Rank #8/35 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
49.5
Rank #31/56 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner65.9
Rank #17/56 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
13.2
Rank #63/96 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner41.6
Rank #8/96 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
38.0
Rank #29/90 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner50.0
Rank #9/90 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
35.9
Rank #43/99 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner51.4
Rank #10/99 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
79.9
Rank #63/96 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner92.0
Rank #11/96 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
76.9
Rank #18/55 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner77.3
Rank #16/55 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
65.9
Rank #57/90 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner88.6
Rank #18/90 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
77.4
Rank #17/22 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner82.8
Rank #7/22 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
winner1310.0
Rank #9/66 · confidence 3 · eval date 2026-02-01
GPT-5.4
1245.0
Rank #32/66 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
57.5
Rank #25/35 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner68.5
Rank #14/35 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
70.6
Rank #40/57 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner78.4
Rank #16/57 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
41.2
Rank #69/86 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner73.9
Rank #24/86 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
65.2
Rank #9/11 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner79.0
Rank #4/11 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
62.9
Rank #8/50 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner64.9
Rank #4/50 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
36.9
Rank #5/20 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner38.9
Rank #4/20 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
winner67.8
Rank #5/28 · confidence 3 · eval date 2026-02-01
GPT-5.4
60.3
Rank #13/28 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
72.1
Rank #11/21 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner75.0
Rank #7/21 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
59.1
Rank #30/46 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner75.1
Rank #12/46 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
54.7
Rank #30/53 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner74.7
Rank #14/53 · confidence 3 · eval date 2026-03-05
Claude Sonnet 4.6
79.5
Rank #55/84 · confidence 3 · eval date 2026-02-01
GPT-5.4
winner87.1
Rank #37/84 · confidence 3 · eval date 2026-03-05
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Sonnet 4.6 | GPT-5.4 |
|---|---|---|
Winner: GPT-5.4 | Claude Sonnet 4.6 claude-sonnet-4-6 Audit score 94 76100100100 | GPT-5.4 gpt-5.4 Audit score 100 100100100100 |
Winner: Claude Sonnet 4.6 | Claude Sonnet 4.6 claude-sonnet-4-6 Audit score 97 10010086100 | GPT-5.4 gpt-5.4 No audit yet |
Winner: Claude Sonnet 4.6 | Claude Sonnet 4.6 claude-sonnet-4-6 Audit score 94 76100100100 | GPT-5.4 gpt-5.4 Audit score 88 84 |
Winner: GPT-5.4 | Claude Sonnet 4.6 claude-sonnet-4-6 No audit yet | GPT-5.4 gpt-5.4 Audit score 93 1008486100 |
Winner: Claude Sonnet 4.6 | Claude Sonnet 4.6 claude-sonnet-4-6 Audit score 91 64100100100 | GPT-5.4 gpt-5.4-openai-compact No audit yet |
Winner: GPT-5.4 | Claude Sonnet 4.6 claude-sonnet-4-6 No audit yet | GPT-5.4 gpt-5.4 Audit score 90 1008476100 |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Claude Sonnet 4.6 | GPT-5.4 |
|---|---|---|
75 tests | Claude Sonnet 4.6 speed / latency 40 tok/s / 3145ms input / output No data | GPT-5.4 speed / latency 50 tok/s / 7305ms input / output No data |
51 tests | Claude Sonnet 4.6 speed / latency 39 tok/s / 5723ms input / output No data | GPT-5.4 speed / latency 43 tok/s / 12778ms input / output No data |
30 tests | Claude Sonnet 4.6 speed / latency 32 tok/s / 6074ms input / output No data | GPT-5.4 speed / latency 31 tok/s / 2364ms input / output No data |
20 tests | Claude Sonnet 4.6 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 34 tok/s / 1748ms input / output No data |
15 tests | Claude Sonnet 4.6 speed / latency N/A / N/A input / output No data | GPT-5.4 speed / latency 41 tok/s / 6581ms input / output No data |
Claude Sonnet 4.6 claude-sonnet-4-6 speed / latency No data input / output $0/M/$0/M | GPT-5.4 gpt-5.4-openai-compact speed / latency No data input / output $0/M | |
Claude Sonnet 4.6 claude-sonnet-4-6 speed / latency No data input / output $0/request | GPT-5.4 gpt-5.4 speed / latency No data input / output $0/request |
Weighted outcome: GPT-5.4. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Input
Output
| Features | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
