Model comparison
Claude Mythos 5 vs Interfaze Beta
Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Claude Mythos 5 #1 (Supported); Interfaze Beta unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude Mythos 5 and Interfaze Beta share 1 comparable benchmark result. 2 of 8 categories are comparable. 14 results are unique to Claude Mythos 5; 9 to Interfaze Beta.
Updated July 23, 2026- Shared results
- 1
- Claude Mythos 5 only
- 14
- Interfaze Beta only
- 9
- Comparable categories
- 2 / 8
Treat this as a split decision. Claude Mythos 5 makes more sense if multimodal & grounded is the priority or you need the larger 1M+ context window; Interfaze Beta is the better fit if knowledge is the priority or you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 1 shared benchmark result across 1 evidence category; 2 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Claude Mythos 5 and Interfaze Beta finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.
Claude Mythos 5 is also the more expensive model on tokens at $10.00 input / $50.00 output per 1M tokens, versus $1.50 input / $3.50 output per 1M tokens for Interfaze Beta. That is roughly 14.3x on output cost alone. Claude Mythos 5 gives you the larger context window at 1M+, compared with 1M for Interfaze Beta.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Claude Mythos 5 | Δ | Interfaze Beta |
|---|---|---|---|
| Multimodal | Claude Mythos 593.5 | Margin← 22.4 | Interfaze Beta71.1 |
| Knowledge | Claude Mythos 568.5 | Margin→ 21.4 | Interfaze Beta89.9 |
| Agentic | Claude Mythos 587.0 | MarginNo overlap | Interfaze BetaNot measured |
| Coding | Claude Mythos 589.7 | MarginNo overlap | Interfaze BetaNot measured |
| Math | Claude Mythos 597.6 | MarginNo overlap | Interfaze BetaNot measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
GPQA
KnowledgeA 94.1%B 89.9%Winner: Claude Mythos 5Δ 4.2GPQA: Claude Mythos 5 scored 94.1%; Interfaze Beta scored 89.9%. Claude Mythos 5 wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Claude Mythos 5 | Interfaze Beta | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude Mythos 5$10 input / $50 output | Interfaze Beta$1.5 input / $3.5 output | Interfaze Beta has the lower combined listed price. |
| Generation speedtokens per second | Claude Mythos 5Not available | Interfaze BetaNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Claude Mythos 5Not available | Interfaze BetaNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Claude Mythos 51M+ | Interfaze Beta1M | Claude Mythos 5 lists the larger context window. |
Benchmark Deep Dive
Agentic4 benchmarks
Coding4 benchmarks
KnowledgeInterfaze Beta wins5 benchmarks
Math1 benchmarks
| Benchmark | Claude Mythos 5 | Interfaze Beta | Result |
|---|---|---|---|
| USAMO 2026Source | 97.6% | — | Not comparable |
Multilingual1 benchmarks
| Benchmark | Claude Mythos 5 | Interfaze Beta | Result |
|---|---|---|---|
| SWE MultilingualSource | 92.2% | — | Not comparable |
MultimodalClaude Mythos 5 wins8 benchmarks
| Benchmark | Claude Mythos 5 | Interfaze Beta | Result |
|---|---|---|---|
| SWE-bench MultimodalSource | 54.9% | — | Not comparable |
| CharXivSource | 93.5% | — | Not comparable |
| CharXiv w/o toolsSource | 88.9% | — | Not comparable |
| OCRBench V2Source | — | 70.7% | Not comparable |
| olmOCRSource | — | 85.7% | Not comparable |
| RefCOCO (avg)Source | — | 82.1% | Not comparable |
| VoxPopuli WERSource | — | 2.4% | Not comparable |
| MMMU-ProSource | — | 71.1% | Not comparable |
Inst. Following1 benchmarks
| Benchmark | Claude Mythos 5 | Interfaze Beta | Result |
|---|---|---|---|
| SOB Value AccSource | — | 79.5% | Not comparable |
Frequently Asked Questions (3)
Which is better, Claude Mythos 5 or Interfaze Beta?
Claude Mythos 5 and Interfaze Beta are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.
Which is better for knowledge tasks, Claude Mythos 5 or Interfaze Beta?
Interfaze Beta has the edge for knowledge tasks in this comparison, averaging 89.9 versus 68.5. Inside this category, GPQA is the benchmark that creates the most daylight between them.
Which is better for multimodal and grounded tasks, Claude Mythos 5 or Interfaze Beta?
Claude Mythos 5 has the edge for multimodal and grounded tasks in this comparison, averaging 93.5 versus 71.1. Interfaze Beta stays close enough that the answer can still flip depending on your workload.
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