Data points: 107
Model compare
The readout for Claude Fable 5 and GPT-4o, before the detailed comparison sheet.
Weighted outcome: Claude Fable 5. Benchmark capability categories carry 80%, while price, API performance, and availability carry 20%.
Decision read
Claude Fable 5
Claude Fable 5 has the higher weighted result; Model A / B score 80 to 20.
Evidence depth
107 data points
Includes 16 benchmark rows, 2 audit samples, and 6 provider examples.
Selection signal
Start with Claude Fable 5
The charts below split 24 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 Fable 5 and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude Fable 5 | GPT-4o |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 80.0 pts | 20.0 pts |
| Benchmark category leads | 5 categories | 0 categories |
| Operational advantages | No data | Cheapest input price, Average speed, First-token latency, Free providers, Provider coverage |
| Context window | 1M tokens | 128K tokens |
| Max output | 128K tokens | 16.4K 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 Fable 5 | GPT-4o |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Released | Jun 2026 | Nov 2024 |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | No data | 2023-10-31 |
| OpenRouter ID | anthropic/claude-fable-5 | openai/gpt-4o |
| References | No data | No data |
This report only uses LMSpeed data for Claude Fable 5 and GPT-4o: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude Fable 5
Claude Fable 5 leads these benchmark categories: Agents, Coding, Reasoning, Knowledge, Instruction following.
GPT-4o
GPT-4o has these operational advantages: Cheapest input price, Average speed, First-token latency, 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 Fable 5
58.7
Avg. score
GPT-4o
43.2
Claude Fable 5 leads by 27.8
Claude Fable 5 leads by 21.7
Claude Fable 5 leads by 20.5
Claude Fable 5 leads by 10.5
GPT-4o
No data
Claude Fable 5
Claude Fable 5 leads by 9.1
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Fable 5
winner80.0
Rank #2/84 · confidence 2 · eval date 2026-06-09
GPT-4o
43.0
Rank #76/84 · confidence 1 · eval date 2024-05-13
Claude Fable 5
$50.00/M
Rank #154/162 · confidence 4
GPT-4o
winner$10.00/M
Rank #120/162 · confidence 4
Claude Fable 5
$20.00/M
Rank #154/162 · confidence 4
GPT-4o
winner$4.38/M
Rank #127/162 · confidence 4
Claude Fable 5
$10.00/M
Rank #153/162 · confidence 4
GPT-4o
winner$2.50/M
Rank #131/162 · confidence 4
Claude Fable 5
winner53.3%
Rank #4/187 · confidence 4
GPT-4o
3.3%
Rank #180/187 · confidence 4
Claude Fable 5
winner92.6%
Rank #8/188 · confidence 4
GPT-4o
54.3%
Rank #156/188 · confidence 4
Claude Fable 5
winner60.2
Rank #1/96 · confidence 2 · eval date 2026-06-09
GPT-4o
33.3
Rank #80/96 · confidence 1 · eval date 2024-05-13
Claude Fable 5
winner60.2%
Rank #1/185 · confidence 4
GPT-4o
33.3%
Rank #120/185 · confidence 4
Claude Fable 5
winner53.3
Rank #1/96 · confidence 2 · eval date 2026-06-09
GPT-4o
3.3
Rank #94/96 · confidence 1 · eval date 2024-05-13
Claude Fable 5
winner61.4
Rank #1/90 · confidence 2 · eval date 2026-06-09
GPT-4o
19.7
Rank #75/90 · confidence 1 · eval date 2024-05-13
Claude Fable 5
winner59.9
Rank #1/99 · confidence 2 · eval date 2026-06-09
GPT-4o
11.2
Rank #90/99 · confidence 1 · eval date 2024-05-13
Claude Fable 5
winner92.6
Rank #7/96 · confidence 2 · eval date 2026-06-09
GPT-4o
54.3
Rank #91/96 · confidence 1 · eval date 2024-05-13
Claude Fable 5
winner54.9
Rank #62/90 · confidence 2 · eval date 2026-06-09
GPT-4o
37.9
Rank #75/90 · confidence 1 · eval date 2024-05-13
Claude Fable 5
winner1332.0
Rank #3/66 · confidence 2 · eval date 2026-06-09
GPT-4o
861.0
Rank #65/66 · confidence 1 · eval date 2024-05-13
Claude Fable 5
winner63.5
Rank #49/86 · confidence 2 · eval date 2026-06-09
GPT-4o
34.3
Rank #82/86 · confidence 1 · eval date 2024-05-13
Claude Fable 5
winner98.5
Rank #2/84 · confidence 2 · eval date 2026-06-09
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 Fable 5 | GPT-4o |
|---|---|---|
Winner: Claude Fable 5 | Claude Fable 5 claude-fable-5 Audit score 79 648468100 | GPT-4o gpt-4o No audit yet |
Winner: Claude Fable 5 | Claude Fable 5 claude-fable-5 Audit score 78 70728088 | GPT-4o gpt-4o-2024-08-06 No audit yet |
Speed aggregates and input/output pricing share each provider row for real API selection and migration cost checks.
| Provider | Claude Fable 5 | GPT-4o |
|---|---|---|
25 tests | Claude Fable 5 speed / latency 46 tok/s / 3687ms input / output No data | GPT-4o speed / latency 88 tok/s / 1593ms input / output No data |
5 tests | Claude Fable 5 speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 48 tok/s / 13138ms input / output No data |
5 tests | Claude Fable 5 speed / latency 39 tok/s / 3109ms input / output No data | GPT-4o speed / latency N/A / N/A input / output No data |
5 tests | Claude Fable 5 speed / latency N/A / N/A input / output No data | GPT-4o speed / latency 58 tok/s / 2583ms input / output No data |
5 tests | Claude Fable 5 speed / latency 134 tok/s / 1876ms input / output No data | GPT-4o speed / latency N/A / N/A input / output No data |
Claude Fable 5 claude-fable-5 speed / latency No data input / output $7.19/M/$7.19/M | GPT-4o gpt-4o speed / latency No data input / output $0/M |
Weighted outcome: Claude Fable 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 |
|---|
