Data points: 105
Model compare
The readout for Claude Opus 4.5 and GPT-4o, before the detailed comparison sheet.
Weighted outcome: Claude Opus 4.5. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Claude Opus 4.5
Claude Opus 4.5 has the higher weighted result; Model A / B score 88 to 12.
Evidence depth
105 data points
Includes 20 benchmark rows, 0 audit samples, and 7 provider examples.
Selection signal
Start with Claude Opus 4.5
The charts below split 27 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 Opus 4.5 and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude Opus 4.5 | GPT-4o |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 88.0 pts | 12.0 pts |
| Benchmark category leads | 6 categories | 0 categories |
| Operational advantages | First-token latency, Provider coverage | Cheapest input price, Average speed, Free providers |
| Context window | 200K tokens | 128K tokens |
| Max output | 64K tokens | 16.4K tokens |
| Modalities | Input FileImageText 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 Opus 4.5 | GPT-4o |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Released | Nov 2025 | Nov 2024 |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | No data | 2023-10-31 |
| OpenRouter ID | anthropic/claude-opus-4.5 | openai/gpt-4o |
| References | No data | No data |
This report only uses LMSpeed data for Claude Opus 4.5 and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude Opus 4.5
Claude Opus 4.5 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge, Math) and operational dimensions (First-token latency, Provider coverage).
GPT-4o
GPT-4o has these operational advantages: Cheapest input price, Average speed, Free providers.
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 Opus 4.5
50.7
Avg. score
GPT-4o
43.2
Claude Opus 4.5 leads by 10.9
Claude Opus 4.5 leads by 10.9
Claude Opus 4.5 leads by 22.2
Claude Opus 4.5 leads by 7.9
Claude Opus 4.5 leads by 7.6
Claude Opus 4.5
Claude Opus 4.5
Claude Opus 4.5 leads by 4.2
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Opus 4.5
winner59.0
Rank #31/84 · confidence 4 · eval date 2025-11-01
GPT-4o
43.0
Rank #76/84 · confidence 1 · eval date 2024-05-13
Claude Opus 4.5
$25.00/M
Rank #147/162 · confidence 4
GPT-4o
winner$10.00/M
Rank #120/162 · confidence 4
Claude Opus 4.5
$10.00/M
Rank #147/162 · confidence 4
GPT-4o
winner$4.38/M
Rank #127/162 · confidence 4
Claude Opus 4.5
$5.00/M
Rank #146/162 · confidence 4
GPT-4o
winner$2.50/M
Rank #131/162 · confidence 4
Claude Opus 4.5
winner88.9%
Rank #4/125 · confidence 4
GPT-4o
74.8%
Rank #90/125 · confidence 4
Claude Opus 4.5
winner81.0%
Rank #73/188 · confidence 4
GPT-4o
54.3%
Rank #156/188 · confidence 4
Claude Opus 4.5
winner12.9%
Rank #80/187 · confidence 4
GPT-4o
3.3%
Rank #180/187 · confidence 4
Claude Opus 4.5
winner73.8%
Rank #24/115 · confidence 4
GPT-4o
30.9%
Rank #88/115 · confidence 4
Claude Opus 4.5
winner47.0%
Rank #25/185 · confidence 4
GPT-4o
33.3%
Rank #120/185 · confidence 4
Claude Opus 4.5
winner47.0
Rank #31/96 · confidence 4 · eval date 2025-11-01
GPT-4o
33.3
Rank #80/96 · confidence 1 · eval date 2024-05-13
Claude Opus 4.5
winner58.6
Rank #23/56 · confidence 4 · eval date 2025-11-01
GPT-4o
25.4
Rank #54/56 · confidence 1 · eval date 2024-05-13
Claude Opus 4.5
winner20.7
Rank #29/47 · confidence 4 · eval date 2025-11-01
GPT-4o
0.3
Rank #47/47 · confidence 1 · eval date 2024-05-13
Claude Opus 4.5
winner40.7
Rank #20/90 · confidence 4 · eval date 2025-11-01
GPT-4o
19.7
Rank #75/90 · confidence 1 · eval date 2024-05-13
Claude Opus 4.5
winner75.4
Rank #45/90 · confidence 4 · eval date 2025-11-01
GPT-4o
37.9
Rank #75/90 · confidence 1 · eval date 2024-05-13
Claude Opus 4.5
winner34.7
Rank #48/99 · confidence 4 · eval date 2025-11-01
GPT-4o
11.2
Rank #90/99 · confidence 1 · eval date 2024-05-13
Claude Opus 4.5
winner81.0
Rank #60/96 · confidence 4 · eval date 2025-11-01
GPT-4o
54.3
Rank #91/96 · confidence 1 · eval date 2024-05-13
Claude Opus 4.5
winner12.9
Rank #65/96 · confidence 4 · eval date 2025-11-01
GPT-4o
3.3
Rank #94/96 · confidence 1 · eval date 2024-05-13
Claude Opus 4.5
winner1277.0
Rank #24/66 · confidence 4 · eval date 2025-11-01
GPT-4o
861.0
Rank #65/66 · confidence 1 · eval date 2024-05-13
Claude Opus 4.5
winner43.0
Rank #64/86 · confidence 4 · eval date 2025-11-01
GPT-4o
34.3
Rank #82/86 · confidence 1 · eval date 2024-05-13
Claude Opus 4.5
winner86.3
Rank #39/84 · confidence 4 · eval date 2025-11-01
GPT-4o
25.1
Rank #75/84 · confidence 1 · eval date 2024-05-13
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Opus 4.5 | GPT-4o |
|---|---|---|
| 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 Opus 4.5 | GPT-4o |
|---|---|---|
20 tests | Claude Opus 4.5 speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 88 tok/s / 1593ms input / output No data |
15 tests | Claude Opus 4.5 speed / latency 56 tok/s / 2598ms input / output No data | GPT-4o speed / latency N/A / N/A input / output No data |
10 tests | Claude Opus 4.5 speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 57 tok/s / 3381ms input / output No data |
5 tests | Claude Opus 4.5 speed / latency 59 tok/s / 2785ms input / output No data | GPT-4o speed / latency N/A / N/A input / output No data |
5 tests | Claude Opus 4.5 speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 48 tok/s / 13138ms input / output No data |
Claude Opus 4.5 claude-opus-4-5 speed / latency No data input / output $0.411/M/$2.05/M | GPT-4o gpt-4o speed / latency No data input / output $0/M | |
Claude Opus 4.5 claude-opus-4-5-20251101 speed / latency No data input / output $0/request | GPT-4o gpt-4o-2024-05-13 speed / latency No data input / output $0/request |
Weighted outcome: Claude Opus 4.5. 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 modeWeb search |
|---|
