AI model matchup
Claude Opus 5 vs Claude Mythos Preview
A side-by-side look at published capability scores, listed API pricing, speed, context, and license - to help you decide which trade-offs fit your work.
Claude Opus 5vsClaude Mythos Preview
Claude Mythos Preview leads the RankLLMs Index by 0.7 points (58.2 vs 57.5). Verified API Pricing: $5.00 (Claude Opus 5) vs $0.00 (Claude Mythos Preview) per 1M tokens.
Capability profile
Speed duel
tpsPrice duel
$/1MShorter bar = cheaper. Blended per 1M tokens.
| Metric | Claude Opus 5 | Claude Mythos Preview |
|---|---|---|
| RankLLMs Overall Score | 57.5 pts | 58.2 pts ▲ |
| Reasoning | 64.5 | 65.8 ▲ |
| Coding | 81.8 | 82.2 ▲ |
| Agentic Tool Use | 65.0 | 85.4 ▲ |
| Code Arena Elo | 2668 ▲ | 1743 |
| Inference Speed | 68 tps ▲ | 50 tps |
| API Price (per 1M tokens) | $5.00 | $0.00 ▲ |
| Context Window | 1M | 1M |
| License | Proprietary | Proprietary |
| Global Rank | #7 | #6 ▲ |
Decision notes
What the numbers suggest
Claude Mythos Preview leads the RankLLMs overall score by 0.7 points. Claude Mythos Preview has the lower listed API rate ($0.00 per 1M tokens).
Treat the overall index as a starting point, then prioritize the benchmark that resembles your task. Published scores and provider pricing can change; this comparison does not represent a first-party test of either model.
- Overall index
- Claude Mythos Preview leads
- 57.5 to 58.2 pts
- Coding score
- Claude Mythos Preview leads
- 81.8 to 82.2 pts
- Reasoning score
- Claude Mythos Preview leads
- 64.5 to 65.8 pts
- Agentic score
- Claude Mythos Preview leads
- 65.0 to 85.4 pts
Choose by workload
Which profile fits your use?
Anthropic
Consider Claude Opus 5 when
you prefer its listed profile or deployment terms. The available scores do not give it a clear lead on the displayed capability measures, so compare it against your own workload before switching.
View Claude Opus 5 profileAnthropic
Consider Claude Mythos Preview when
your workload gives more weight to the higher listed coding score, the higher listed reasoning score, the higher overall index score, the lower listed API rate. Compare those signals with your own task mix, latency needs, and budget.
View Claude Mythos Preview profile