Model comparison
Claude Mythos 5 vs Ornith-1.0-9B
Head-to-head evidence from 4 shared benchmark results across 2 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Claude Mythos 5 #1 (Supported); Ornith-1.0-9B unranked (Not scored). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Claude Mythos 5 and Ornith-1.0-9B share 4 comparable benchmark results. 2 of 8 categories are comparable. 11 results are unique to Claude Mythos 5; 3 to Ornith-1.0-9B.
Updated July 23, 2026- Shared results
- 4
- Claude Mythos 5 only
- 11
- Ornith-1.0-9B only
- 3
- Comparable categories
- 2 / 8
Treat this as a split decision. Claude Mythos 5 makes more sense if agentic is the priority or you need the larger 1M+ context window; Ornith-1.0-9B is the better fit if you want the cheaper token bill.
Confidence note. This is a partial-evidence comparison with 4 shared benchmark results across 2 evidence categories; 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 Ornith-1.0-9B 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 $0.00 input / $0.00 output per 1M tokens for Ornith-1.0-9B. That is roughly Infinityx on output cost alone. Claude Mythos 5 gives you the larger context window at 1M+, compared with 256K for Ornith-1.0-9B.
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 | Ornith-1.0-9B |
|---|---|---|---|
| Agentic | Claude Mythos 587.0 | Margin← 43.9 | Ornith-1.0-9B43.1 |
| Coding | Claude Mythos 589.7 | Margin← 30.5 | Ornith-1.0-9B59.2 |
| Knowledge | Claude Mythos 568.5 | MarginNo overlap | Ornith-1.0-9BNot measured |
| Math | Claude Mythos 597.6 | MarginNo overlap | Ornith-1.0-9BNot measured |
| Multimodal | Claude Mythos 593.5 | MarginNo overlap | Ornith-1.0-9BNot measured |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
Terminal-Bench 2.0
AgenticA 88%B 43.1%Winner: Claude Mythos 5Δ 44.9Terminal-Bench 2.0: Claude Mythos 5 scored 88%; Ornith-1.0-9B scored 43.1%. Claude Mythos 5 wins this benchmark. - Source ↗
SWE-bench Pro
CodingA 80.3%B 42.9%Winner: Claude Mythos 5Δ 37.4SWE-bench Pro: Claude Mythos 5 scored 80.3%; Ornith-1.0-9B scored 42.9%. Claude Mythos 5 wins this benchmark. - Source ↗
SWE-bench Verified
CodingA 95.5%B 69.4%Winner: Claude Mythos 5Δ 26.1SWE-bench Verified: Claude Mythos 5 scored 95.5%; Ornith-1.0-9B scored 69.4%. 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 | Ornith-1.0-9B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Claude Mythos 5$10 input / $50 output | Ornith-1.0-9B$0 input / $0 output | Ornith-1.0-9B has the lower combined listed price. |
| Generation speedtokens per second | Claude Mythos 5Not available | Ornith-1.0-9BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Claude Mythos 5Not available | Ornith-1.0-9BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Claude Mythos 51M+ | Ornith-1.0-9B256K | Claude Mythos 5 lists the larger context window. |
Benchmark Deep Dive
AgenticClaude Mythos 5 wins5 benchmarks
CodingClaude Mythos 5 wins5 benchmarks
Knowledge3 benchmarks
Math1 benchmarks
| Benchmark | Claude Mythos 5 | Ornith-1.0-9B | Result |
|---|---|---|---|
| USAMO 2026Source | 97.6% | — | Not comparable |
Multilingual1 benchmarks
| Benchmark | Claude Mythos 5 | Ornith-1.0-9B | Result |
|---|---|---|---|
| SWE MultilingualSource | 92.2% | — | Not comparable |
Frequently Asked Questions (3)
Which is better, Claude Mythos 5 or Ornith-1.0-9B?
Claude Mythos 5 and Ornith-1.0-9B 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 coding, Claude Mythos 5 or Ornith-1.0-9B?
Claude Mythos 5 has the edge for coding in this comparison, averaging 89.7 versus 59.2. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, Claude Mythos 5 or Ornith-1.0-9B?
Claude Mythos 5 has the edge for agentic tasks in this comparison, averaging 87 versus 43.1. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
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