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 Mythos Preview
Anthropic

GPT-5.5 Pro
OpenAI
Each axis is a category average, normalized to a 100-point radar.
Relative edge: 综合评估 +10.6 / Relative gap: AI Agent - 信息收集 -5.2
Relative edge: AI Agent - 信息收集 +5.2 / Relative gap: 综合评估 -10.6
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 Mythos Preview · 81.40
Best single
Claude Mythos Preview · GPQA Diamond 94.60
Modality coverage
Claude Mythos Preview · 2 modalities
Head to head
3
Benchmarks
2
Wins
1
Losses
+0.99
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.
3 benchmarks with comparable scores. Each model shows its best score; mode label is displayed below.
| Benchmark | Claude Mythos Preview | GPT-5.5 Pro |
|---|---|---|
HLE 综合评估 | 64.70Extended Thinking | Tools | 57.20Thinking Level · Extra High | Tools |
GPQA Diamond 科学与综合推理 | 94.60Extended Thinking | 93.92Thinking Level · Extra High |
BrowseComp AI Agent - 信息收集 | 84.90Extended Thinking | Tools | 90.10Deep Thinking Mode | Tools |
Side-by-side input/output token pricing
Licensing, MoE architecture, and multi-modality support.
| Features & specs | Claude Mythos PreviewAnthropic | GPT-5.5 ProOpenAI |
|---|---|---|
Core specsRelease | 2026-04-07 | 2026-04-23 |
Context length | — | 1000K |
Max output | 8192 | 131072 |
MoE | No | No |
LicenseCode Open Source | Not provided | Not provided |
Weights Open Source | Not provided | Not provided |
Commercial use | 不开源 | 不开源 |
Modality supportText Input/Output | / | / |
Image Input/Output | / | / |
ResourcesPaper / report | Introducing Claude Mythos Preview and Project Glasswing | Introducing GPT‑5.5 |
DataLearner blog | Claude Mythos 是什么?Anthropic最强模型评测、安全能力与Project Glasswing详解 | OpenAI 发布 GPT-5.5:代号 |