See key specs and per-benchmark scores for each model/mode. Scroll horizontally for all columns. 当前对比 2 个模型的评测数据与核心参数。

Claude Fable 5
Anthropic
Each axis is a category average, normalized to a 100-point radar.
Relative edge: 常识推理 +12.9 / Relative gap: none clear
Relative edge: none clear / Relative gap: 常识推理 -12.9
Method: for each model and benchmark, the chart first averages all scores in the current mode scope instead of taking the best score, then averages those benchmark scores within each category. Only benchmarks with at least two selected models scored are included; missing values are not counted as zero.
Best overall
Claude Fable 5 · 80.77
Best single
Claude Fable 5 · Terminal-Bench 2.1 88.00
Modality coverage
Claude Fable 5 · 2 modalities
Head to head
11
Benchmarks
10
Wins
1
Losses
+7.35
Average diff
Compare benchmark results across thinking modes and tool usage.
Data sourced primarily from official releases (GitHub, Hugging Face, papers), then benchmark leaderboards, then third-party evaluators. Learn about our data methodology
Complete scores for each model/mode across selected benchmarks.
11 benchmarks with comparable scores. Each model shows its best score; mode label is displayed below.
| Benchmark | Claude Fable 5 | GPT-5.5 |
|---|---|---|
HLE 综合评估 | 59.00Deep Thinking Mode | 52.20Thinking Level · High | Tools |
LiveBench 综合评估 | 78.31Deep Thinking Mode | 80.71Deep Thinking Mode |
DeepSWE 编程与软件工程 | 70.00Deep Thinking Mode | Tools | 67.00Thinking Level · Extra High | Tools |
SWE-Bench Pro - Public 编程与软件工程 | 80.30Deep Thinking Mode | Tools | 58.60Thinking Level · High | Tools |
WeirdML v2 编程与软件工程 | 87.85Thinking Level · High | Tools | 84.91Thinking Level · Extra High | Tools |
SimpleBench 常识推理 | 81.90Standard Mode | 69.00Standard Mode |
MCP-Atlas AI Agent - 工具使用 | 83.30Standard Mode | Tools | 75.30Thinking Level · Extra High | Tools |
OSWorld-Verified AI Agent - 工具使用 | 85.00Thinking Level · High | Tools | 78.70Thinking Level · High | Tools |
Terminal-Bench 2.1 AI Agent - 工具使用 | 88.00Thinking Level · High | Tools | 83.40Thinking Level · High | Tools |
87.80Thinking Level · High | 72.50Thinking Level · Extra High | |
FrontierMath v2 数学推理 | 87.02Thinking Level · High | 85.26Thinking Level · Extra High |
Side-by-side input/output token pricing
Licensing, MoE architecture, and multi-modality support.
| Features & specs | Claude Fable 5Anthropic | GPT-5.5OpenAI |
|---|---|---|
Core specsRelease | 2026-06-09 | 2026-04-23 |
Context length | 1M | 1000K |
Max output | 128000 | 131072 |
MoE | No | No |
LicenseCode Open Source | Closed Source | Closed Source |
Weights Open Source | Closed Source | Closed Source |
Commercial use | 不开源 | 不开源 |
Modality supportText Input/Output | / | / |
Image Input/Output | / | / |
ResourcesPaper / report | Claude Fable 5 and Claude Mythos 5 | Introducing GPT‑5.5 |
DataLearner blog | Not provided | OpenAI 发布 GPT-5.5:代号 |

GPT-5.5
OpenAI