Data points: 77
Model compare
The readout for Claude 3.5 Sonnet and GPT-5, before the detailed comparison sheet.
Weighted outcome: GPT-5. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
GPT-5
GPT-5 has the higher weighted result; Model A / B score 4 to 96.
Evidence depth
77 data points
Includes 10 benchmark rows, 0 audit samples, and 8 provider examples.
Selection signal
Start with GPT-5
The charts below split 18 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 3.5 Sonnet and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude 3.5 Sonnet | GPT-5 |
|---|---|---|
| Overall leader | Contender | Leading |
| Weighted overall score | 4.0 pts | 96.0 pts |
| Benchmark category leads | 0 categories | 3 categories |
| Operational advantages | First-token latency | Cheapest input price, Average speed, Free providers, Provider coverage |
| Context window | No data | 400K tokens |
| Max output | No data | 128K tokens |
| Modalities | No data | 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 3.5 Sonnet | GPT-5 |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Released | No data | Aug 2025 |
| Parameters | No data | No data |
| Tokenizer | No data | GPT |
| Knowledge cutoff | No data | 2024-09-30 |
| OpenRouter ID | No data | openai/gpt-5 |
| References | No data | No data |
This report only uses LMSpeed data for Claude 3.5 Sonnet and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude 3.5 Sonnet
Claude 3.5 Sonnet has these operational advantages: First-token latency.
GPT-5
GPT-5 is stronger in benchmark categories (Coding, Reasoning, Math) 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 3.5 Sonnet
41.4
Avg. score
GPT-5
51.9
GPT-5
GPT-5 leads by 12.7
GPT-5 leads by 7.0
GPT-5
GPT-5 leads by 18.7
No data
No data
GPT-5
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude 3.5 Sonnet
$3.00/M
Rank #137/162 · confidence 4
GPT-5
winner$1.25/M
Rank #107/162 · confidence 4
Claude 3.5 Sonnet
$6.00/M
Rank #137/162 · confidence 4
GPT-5
winner$3.44/M
Rank #117/162 · confidence 4
Claude 3.5 Sonnet
$15.00/M
Rank #136/162 · confidence 4
GPT-5
winner$10.00/M
Rank #120/162 · confidence 4
Claude 3.5 Sonnet
77.2%
Rank #78/125 · confidence 4
GPT-5
winner80.6%
Rank #57/125 · confidence 4
Claude 3.5 Sonnet
59.9%
Rank #141/188 · confidence 4
GPT-5
winner67.3%
Rank #121/188 · confidence 4
Claude 3.5 Sonnet
3.9%
Rank #165/187 · confidence 4
GPT-5
winner5.4%
Rank #132/187 · confidence 4
Claude 3.5 Sonnet
38.1%
Rank #77/115 · confidence 4
GPT-5
winner55.8%
Rank #49/115 · confidence 4
Claude 3.5 Sonnet
36.6%
Rank #100/185 · confidence 4
GPT-5
winner38.8%
Rank #83/185 · confidence 4
Claude 3.5 Sonnet
15.7%
Rank #49/68 · confidence 4
GPT-5
winner36.7%
Rank #35/68 · confidence 4
Claude 3.5 Sonnet
77.1%
Rank #54/74 · confidence 4
GPT-5
winner86.1%
Rank #42/74 · confidence 4
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude 3.5 Sonnet | GPT-5 |
|---|---|---|
| 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 | Claude 3.5 Sonnet | GPT-5 |
|---|---|---|
15 tests | Claude 3.5 Sonnet speed / latency 8 tok/s / 2740ms input / output No data | GPT-5 speed / latency 38 tok/s / 15844ms input / output No data |
0 tests | Claude 3.5 Sonnet speed / latency N/A / N/A input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
0 tests | Claude 3.5 Sonnet speed / latency N/A / N/A input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
0 tests | Claude 3.5 Sonnet speed / latency N/A / N/A input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
0 tests | Claude 3.5 Sonnet speed / latency N/A / N/A input / output No data | GPT-5 speed / latency N/A / N/A input / output No data |
Claude 3.5 Sonnet claude-3-5-sonnet-20240620 speed / latency No data input / output $0.0086/M/$0.043/M | GPT-5 gpt-5-medium speed / latency No data input / output $0.179/M | |
Claude 3.5 Sonnet claude-3-5-sonnet-all speed / latency No data input / output $0.011/request | GPT-5 gpt-5-chat speed / latency No data input / output $1.25/M | |
Claude 3.5 Sonnet claude-3-5-sonnet-all speed / latency No data input / output $0.0088/request | GPT-5 gpt-5-search-api speed / latency No data input / output $1.25/M |
Weighted outcome: GPT-5. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
| Features | None listed | Text inputImage inputFile inputText outputTool callingStructured outputsJSON modeReasoning |
|---|
