Model comparison
Claude 3 Opus vs Claude Mythos 5
Head-to-head evidence from 0 shared benchmark results across 0 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Claude 3 Opus #168 (Supported); Claude Mythos 5 #1 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude 3 Opus and Claude Mythos 5 share 0 comparable benchmark results. 0 of 8 categories are comparable. 5 results are unique to Claude 3 Opus; 15 to Claude Mythos 5.
Updated July 23, 2026- Shared results
- 0
- Claude 3 Opus only
- 5
- Claude Mythos 5 only
- 15
- Comparable categories
- 0 / 8
Benchmark data for Claude 3 Opus and Claude Mythos 5 is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 0 shared benchmark results across 0 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
Claude 3 Opus is priced at $15.00 input / $75.00 output per 1M tokens, versus $10.00 input / $50.00 output per 1M tokens for Claude Mythos 5. Claude Mythos 5 has the larger context window at 1M+, compared with 200K for Claude 3 Opus.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude 3 Opus | Claude Mythos 5 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude 3 Opus$15 input / $75 output | Claude Mythos 5$10 input / $50 output | Claude Mythos 5 has the lower combined listed price. |
| Generation speedtokens per second | Claude 3 OpusNot available | Claude Mythos 5Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Claude 3 OpusNot available | Claude Mythos 5Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Claude 3 Opus200K | Claude Mythos 51M+ | Claude Mythos 5 lists the larger context window. |
Benchmark Deep Dive
Frequently Asked Questions (3)
Can I compare Claude 3 Opus and Claude Mythos 5 on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for Claude 3 Opus and Claude Mythos 5 today?
Claude 3 Opus: $15.00 input / $75.00 output per 1M tokens Claude Mythos 5: $10.00 input / $50.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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