Claude Mythos Preview Benchmark Details
Claude Mythos Preview currently shows benchmark results led by GPQA Diamond (1 / 187, score 94.60), HLE (1 / 170, score 64.70), SWE-bench Verified (3 / 111, score 93.90). This page also compares it with 1 competitor models and 1 predecessor or same-series models, including performance and pricing views when available. 1 source link is attached for reference.
Benchmark Results
Benchmark Results
General Knowledge
3 evaluationsCoding and Software Engineer
3 evaluationsAI Agent - Tool Usage
2 evaluationsCompetitor Comparison
Benchmark scores for Claude Mythos Preview compared against top models in its class
3 benchmarks with comparable scores. Each model shows its best score; mode label is displayed below.
| Benchmark | Claude Mythos PreviewCurrent | GPT-5.4 Pro |
|---|---|---|
GPQA Diamond 综合评估 | 94.60Extended Thinking | 94.40Thinking Level · High |
HLE 综合评估 | 64.70Extended Thinking ｜ Tools | 58.70Thinking Level · High ｜ Tools |
BrowseComp AI Agent - 信息收集 | 84.90Extended Thinking ｜ Tools | 89.30Thinking Level · High ｜ Tools |
Standard API Pricing: Claude Mythos Preview vs. Peer Models
Shows standard text input and output pricing side by side for each model. If extended-context pricing exists, the chart keeps the base rate and explains the threshold below.
Source: DataLearnerAI. Standard text prices shown here use the default supplier. · USD / 1M tokens
When a context threshold exists, the charted base price only applies within these limits:
| Model | Supplier | Standard input | Standard output | Base price applies to |
|---|---|---|---|---|
Claude Mythos Preview | Anthropic | $25 / 1M tokens | $125 / 1M tokens | — |
GPT-5.4 Pro | OpenAI | $30 / 1M tokens | $180 / 1M tokens | <= 272K |
Version History
How each version of the Claude Mythos Preview series stacks up on benchmark tests
7 benchmarks with comparable scores. Each model shows its best score; mode label is displayed below.· Click a row to view its trend chart.
| Benchmark | Claude Mythos PreviewCurrent | Claude Opus 4.6 |
|---|---|---|
GPQA Diamond 综合评估 | 94.60Extended Thinking | 91.31Extended Thinking |
HLE 综合评估 | 64.70Extended Thinking ｜ Tools | 53.00Extended Thinking ｜ Tools |
SWE-bench Multilingual 编程与软件工程 | 87.30Extended Thinking ｜ Tools | 72.00Extended Thinking ｜ Tools |
SWE-bench Verified 编程与软件工程 | 93.90Extended Thinking ｜ Tools | 80.84Extended Thinking ｜ Tools |
BrowseComp AI Agent - 信息收集 | 84.90Extended Thinking ｜ Tools | 84.00Thinking Enabled ｜ Tools |
OSWorld-Verified AI Agent - 工具使用 | 79.60Extended Thinking ｜ Tools | 72.70Extended Thinking ｜ Tools |
Terminal Bench 2.0 AI Agent - 工具使用 | 82.00Extended Thinking ｜ Tools | 65.40Extended Thinking ｜ Tools |
Single-Benchmark Version Trend
Viewing: GPQA Diamond · 综合评估
Standard API Pricing Across the Claude Mythos Preview Series
Shows standard text input and output pricing side by side for each model. If extended-context pricing exists, the chart keeps the base rate and explains the threshold below.
Source: DataLearnerAI. Standard text prices shown here use the default supplier. · USD / 1M tokens
When a context threshold exists, the charted base price only applies within these limits:
| Model | Supplier | Standard input | Standard output | Base price applies to |
|---|---|---|---|---|
Claude Mythos Preview | Anthropic | $25 / 1M tokens | $125 / 1M tokens | — |
Claude Opus 4.6 | Anthropic | $5 / 1M tokens | $25 / 1M tokens | <= 200K |