Data points: 117
Model compare
The readout for Claude Fable 5 and GPT-5, 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 68 to 32.
Evidence depth
117 data points
Includes 21 benchmark rows, 2 audit samples, and 6 provider examples.
Selection signal
Start with Claude Fable 5
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.
This report only uses LMSpeed data for Claude Fable 5 and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
| Model compare | Claude Fable 5 | GPT-5 |
|---|---|---|
| Overall leader | Leading | Contender |
| Weighted overall score | 68.0 pts | 32.0 pts |
| Benchmark category leads | 4 categories | 1 categories |
| Operational advantages | First-token latency | Cheapest input price, Average speed, Free providers, Provider coverage |
| Context window | 1M tokens | 400K 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 Fable 5 | GPT-5 |
|---|---|---|
| Developer | Anthropic | OpenAI |
| Released | Jun 2026 | Aug 2025 |
| Parameters | No data | No data |
| Tokenizer | Claude | GPT |
| Knowledge cutoff | No data | 2024-09-30 |
| OpenRouter ID | anthropic/claude-fable-5 | openai/gpt-5 |
| References | No data | No data |
This report only uses LMSpeed data for Claude Fable 5 and GPT-5: pricing, speed aggregates, third-party benchmark scores, and shared provider samples.
Claude Fable 5
Claude Fable 5 is stronger in benchmark categories (Agents, Coding, Reasoning, Knowledge) and operational dimensions (First-token latency).
GPT-5
GPT-5 is stronger in benchmark categories (Instruction following) 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 Fable 5
58.7
Avg. score
GPT-5
51.9
Claude Fable 5 leads by 21.2
Claude Fable 5 leads by 18.9
Claude Fable 5 leads by 9.1
Claude Fable 5 leads by 10.3
GPT-5
No data
Claude Fable 5
GPT-5 leads by 2.5
Metric-level scores with benchmark source, rank depth, confidence, error, and evaluation date where available.
Claude Fable 5
$10.00/M
Rank #153/162 · confidence 4
GPT-5
winner$1.25/M
Rank #107/162 · confidence 4
Claude Fable 5
$20.00/M
Rank #154/162 · confidence 4
GPT-5
winner$3.44/M
Rank #117/162 · confidence 4
Claude Fable 5
$50.00/M
Rank #154/162 · confidence 4
GPT-5
winner$10.00/M
Rank #120/162 · confidence 4
Claude Fable 5
70.0
Rank #19/89 · confidence 2 · eval date 2026-06-09
GPT-5
winner75.6
Rank #2/89 · confidence 1 · eval date 2025-08-07
Claude Fable 5
winner53.3%
Rank #4/187 · confidence 4
GPT-5
5.4%
Rank #132/187 · confidence 4
Claude Fable 5
winner28.6
Rank #5/73 · confidence 2 · eval date 2026-06-09
GPT-5
5.7
Rank #30/73 · confidence 1 · eval date 2025-08-07
Claude Fable 5
winner92.6%
Rank #8/188 · confidence 4
GPT-5
67.3%
Rank #121/188 · confidence 4
Claude Fable 5
winner60.2
Rank #1/96 · confidence 2 · eval date 2026-06-09
GPT-5
42.9
Rank #46/96 · confidence 1 · eval date 2025-08-07
Claude Fable 5
winner60.2%
Rank #1/185 · confidence 4
GPT-5
38.8%
Rank #83/185 · confidence 4
Claude Fable 5
winner76.5
Rank #3/59 · confidence 2 · eval date 2026-06-09
GPT-5
37.8
Rank #41/59 · confidence 1 · eval date 2025-08-07
Claude Fable 5
winner53.3
Rank #1/96 · confidence 2 · eval date 2026-06-09
GPT-5
26.5
Rank #39/96 · confidence 1 · eval date 2025-08-07
Claude Fable 5
winner61.4
Rank #1/90 · confidence 2 · eval date 2026-06-09
GPT-5
40.7
Rank #20/90 · confidence 1 · eval date 2025-08-07
Claude Fable 5
winner59.9
Rank #1/99 · confidence 2 · eval date 2026-06-09
GPT-5
34.7
Rank #48/99 · confidence 1 · eval date 2025-08-07
Claude Fable 5
winner92.6
Rank #7/96 · confidence 2 · eval date 2026-06-09
GPT-5
85.4
Rank #45/96 · confidence 1 · eval date 2025-08-07
Claude Fable 5
54.9
Rank #62/90 · confidence 2 · eval date 2026-06-09
GPT-5
winner82.1
Rank #31/90 · confidence 1 · eval date 2025-08-07
Claude Fable 5
winner1332.0
Rank #3/66 · confidence 2 · eval date 2026-06-09
GPT-5
1214.0
Rank #40/66 · confidence 1 · eval date 2025-08-07
Claude Fable 5
63.5
Rank #49/86 · confidence 2 · eval date 2026-06-09
GPT-5
winner73.1
Rank #29/86 · confidence 1 · eval date 2025-08-07
Claude Fable 5
winner1747.0
Rank #1/55 · confidence 2 · eval date 2026-06-09
GPT-5
1079.0
Rank #31/55 · confidence 1 · eval date 2025-08-07
Claude Fable 5
winner62.3
Rank #1/50 · confidence 2 · eval date 2026-06-09
GPT-5
28.9
Rank #31/50 · confidence 1 · eval date 2025-08-07
Claude Fable 5
winner52.8
Rank #2/55 · confidence 2 · eval date 2026-06-09
GPT-5
25.7
Rank #28/55 · confidence 1 · eval date 2025-08-07
Claude Fable 5
winner98.5
Rank #2/84 · confidence 2 · eval date 2026-06-09
GPT-5
84.8
Rank #44/84 · confidence 1 · eval date 2025-08-07
Latest completed audits from shared providers, with four safety and integrity score groups plus report links.
| Provider | Claude Fable 5 | GPT-5 |
|---|---|---|
Winner: Claude Fable 5 | Claude Fable 5 claude-fable-5 Audit score 79 648468100 | GPT-5 gpt-5 No audit yet |
Winner: Claude Fable 5 | Claude Fable 5 claude-fable-5 Audit score 78 70728088 | GPT-5 gpt-5 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-5 |
|---|---|---|
20 tests | Claude Fable 5 speed / latency N/A / N/A input / output No data | GPT-5 speed / latency 95 tok/s / 1234ms input / output No data |
5 tests | Claude Fable 5 speed / latency 39 tok/s / 3109ms input / output No data | GPT-5 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-5 speed / latency 102 tok/s / 948ms input / output No data |
5 tests | Claude Fable 5 speed / latency 134 tok/s / 1876ms input / output No data | GPT-5 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-5 speed / latency 58 tok/s / 17419ms input / output No data |
Claude Fable 5 claude-fable-5 speed / latency No data input / output $7.19/M/$7.19/M | GPT-5 gpt-5 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 modeReasoning |
|---|
