Grok 4.5vsClaude Fable 5
Across 14 shared benchmarks, Claude Fable 5 leads overall: Grok 4.5 wins 1, Claude Fable 5 wins 13, with 0 ties and an average score difference of -46.96.
Grok 4.5
xAI · 2026-07-08 · Coding model
Claude Fable 5
Anthropic · 2026-06-09 · Reasoning model
Grok 4.51 win(7%)(93%)13 winsClaude Fable 5
Benchmark scores
Grouped by capability, sorted by largest gap within each. 14 shared benchmarks.
Coding and Software Engineer
Claude Fable 5 5/5| Benchmark | Grok 4.5 | Claude Fable 5 | Diff |
|---|---|---|---|
| DeepSWE | 5318 / 27Thinking High (With Tools) | 702 / 27Deep Thinking (With Tools) | -17 |
| SWE-Bench Pro - Public | 64.706 / 57Thinking High (With Tools) | 80.301 / 57Deep Thinking (With Tools) | -15.60 |
| FrontierCode 1.1 | 56.604 / 5Thinking High (With Tools) | 63.601 / 5Max (With Tools) | -7 |
| APEX-SWE | 53.603 / 3Thinking High (With Tools) | 58.801 / 3Max (With Tools) | -5.20 |
| CursorBench 3.2 | 66.704 / 4Thinking High (With Tools) | 70.501 / 4Max (With Tools) | -3.80 |
Productivity Knowledge
Claude Fable 5 2/3| Benchmark | Grok 4.5 | Claude Fable 5 | Diff |
|---|---|---|---|
| AA-Briefcase | 1,3136 / 6Thinking High (With Tools) | 1,5743 / 6Max (With Tools) | -261 |
| GDPval-AA v2 | 1,5267 / 13Thinking High (With Tools) | 1,7414 / 13Max (With Tools) | -215 |
| Harvey Lab-AA | 12.904 / 6Thinking High (With Tools) | 11.305 / 6Max (With Tools) | +1.60 |
AI Agent - Tool Usage
Claude Fable 5 2/2| Benchmark | Grok 4.5 | Claude Fable 5 | Diff |
|---|---|---|---|
| Terminal-Bench 3.0 | 15.705 / 6Thinking High (With Tools) | 34.102 / 6Max (With Tools) | -18.40 |
| Terminal-Bench 2.1 | 83.3014 / 44Thinking High (With Tools) | 884 / 44Deep Thinking (With Tools) | -4.70 |
Math and Reasoning
Claude Fable 5 2/2| Benchmark | Grok 4.5 | Claude Fable 5 | Diff |
|---|---|---|---|
| FrontierMath Tier 4 v2 | 24.3920 / 34Thinking High (No Tools) | 87.801 / 34最高（无工具） | -63.41 |
| FrontierMath v2 | 57.1921 / 34Thinking High (No Tools) | 87.023 / 34最高（无工具） | -29.82 |
Agent Level Benchmark
Claude Fable 5 1/1| Benchmark | Grok 4.5 | Claude Fable 5 | Diff |
|---|---|---|---|
| APEX-Agents | 47.104 / 5Thinking High (With Tools) | 59.201 / 5Max (With Tools) | -12.10 |
General Knowledge
Claude Fable 5 1/1| Benchmark | Grok 4.5 | Claude Fable 5 | Diff |
|---|---|---|---|
| AA Intelligence Index | 564 / 8Thinking High (With Tools) | 621 / 8Max (With Tools) | -6 |
Specs
| Field | Grok 4.5 | Claude Fable 5 |
|---|---|---|
| Publisher | xAI | Anthropic |
| Release date | 2026-07-08 | 2026-06-09 |
| Model type | Coding model | Reasoning model |
| Architecture | Dense | Dense |
| Parameters | Not available | Not available |
| Context length | 500K | 1M |
| Max output | Not available | 128K |
API pricing
Prices use DataLearner records when available; missing fields are not inferred.
| Item | Grok 4.5 | Claude Fable 5 |
|---|---|---|
| Text input | $2 / 1M tokens | $10 / 1M tokens |
| Text output | $6 / 1M tokens | $50 / 1M tokens |
| Cache read | $0.5 / 1M tokens | $1 / 1M tokens |
| Cache write | Not public | $12.5 / 1M tokens |
Summary
- Claude Fable 5leads in:Coding and Software Engineer (5/5), Productivity Knowledge (2/3), AI Agent - Tool Usage (2/2), Math and Reasoning (2/2), Agent Level Benchmark (1/1), General Knowledge (1/1)
On average across the 14 shared benchmarks, Claude Fable 5 scores 46.96 higher.
Largest single-benchmark gap: AA-Briefcase — Grok 4.5 1,313 vs Claude Fable 5 1,574 (-261).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.