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Model comparison

Claude Mythos 5 vs Soofi S 30B-A3B

Data verified

Head-to-head evidence from 1 shared benchmark result across 1 category. Overall scores shown here use BenchLM's provisional ranking lane.

89/100
Margin
44.0pts
← winning
Soofi S 30B-A3B
Soofi Project
45/100
1 category wins0 category wins

Evidence parity. Claude Mythos 5 and Soofi S 30B-A3B share 1 comparable benchmark result. 1 of 8 categories are comparable. 14 results are unique to Claude Mythos 5; 7 to Soofi S 30B-A3B.

Updated July 15, 2026
Shared results
1
Claude Mythos 5 only
14
Soofi S 30B-A3B only
7
Comparable categories
1 / 8

Pick Claude Mythos 5 if you want the stronger benchmark profile. Soofi S 30B-A3B only becomes the better choice if you want the cheaper token bill or you would rather avoid the extra latency and token burn of a reasoning model.

Confidence note. This is a partial-evidence comparison with 1 shared benchmark result across 1 evidence category; 1 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 is clearly ahead on the provisional aggregate, 89 to 45. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude Mythos 5's sharpest advantage is in knowledge, where it averages 68.5 against 49.9. The single biggest benchmark swing on the page is GPQA, 94.1% to 43.4%.

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 Soofi S 30B-A3B. That is roughly Infinityx on output cost alone. Claude Mythos 5 is the reasoning model in the pair, while Soofi S 30B-A3B is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Claude Mythos 5 gives you the larger context window at 1M+, compared with 1M for Soofi S 30B-A3B.

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 scores and score margins for Claude Mythos 5 and Soofi S 30B-A3B
CategoryClaude Mythos 5ΔSoofi S 30B-A3B
KnowledgeClaude Mythos 568.5Margin← 18.6Soofi S 30B-A3B49.9
AgenticClaude Mythos 587.0MarginNo overlapSoofi S 30B-A3BNot measured
CodingClaude Mythos 586.0MarginNo overlapSoofi S 30B-A3BNot measured
MathClaude Mythos 599.8MarginNo overlapSoofi S 30B-A3BNot measured
MultimodalClaude Mythos 593.5MarginNo overlapSoofi S 30B-A3BNot measured

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · Claude Mythos 5B · Soofi S 30B-A3B

  1. GPQA

    Knowledge
    Source ↗
    A 94.1%B 43.4%
    Winner: Claude Mythos 5Δ 50.7
    GPQA: Claude Mythos 5 scored 94.1%; Soofi S 30B-A3B scored 43.4%. Claude Mythos 5 wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricClaude Mythos 5Soofi S 30B-A3BComparison
Input / output priceUSD per 1M tokensClaude Mythos 5$10 input / $50 outputSoofi S 30B-A3B$0 input / $0 outputSoofi S 30B-A3B has the lower combined listed price.
Generation speedtokens per secondClaude Mythos 5Not availableSoofi S 30B-A3BNot availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenClaude Mythos 5Not availableSoofi S 30B-A3BNot availableA complete latency comparison is not available.
Context windowmaximum listed tokensClaude Mythos 51M+Soofi S 30B-A3B1MListed context windows are equal.

Benchmark Deep Dive

Agentic
BenchmarkClaude Mythos 5Soofi S 30B-A3BResult
Terminal-Bench 2.0Source 88%—Not comparable
OSWorld-VerifiedSource 85%—Not comparable
BrowseCompSource 88%—Not comparable
ExploitGymSource 17.5%—Not comparable
Coding
BenchmarkClaude Mythos 5Soofi S 30B-A3BResult
SWE-bench VerifiedSource 95.5%—Not comparable
SWE-bench ProSource 80.3%—Not comparable
Terminal-Bench 2.0Source 88.0%—Not comparable
HumanEvalSource —73.8%Not comparable
Reasoning
BenchmarkClaude Mythos 5Soofi S 30B-A3BResult
BBHSource —78.8%Not comparable
DROPSource —66.5%Not comparable
KnowledgeClaude Mythos 5 wins
BenchmarkClaude Mythos 5Soofi S 30B-A3BResult
GPQASource 94.1%43.4%Claude Mythos 5 leads
HLESource 64.5%—Not comparable
HLE w/o toolsSource 59%—Not comparable
GPQA-DSource —43.4%Not comparable
MMLU-ProSource —51.4%Not comparable
AGIEvalSource —66.9%Not comparable
Math
BenchmarkClaude Mythos 5Soofi S 30B-A3BResult
USAMO 2026Source 99.8%—Not comparable
GSM8KSource —86.1%Not comparable
Multilingual
BenchmarkClaude Mythos 5Soofi S 30B-A3BResult
SWE MultilingualSource 92.2%—Not comparable
Multimodal
BenchmarkClaude Mythos 5Soofi S 30B-A3BResult
SWE-bench MultimodalSource 54.9%—Not comparable
CharXivSource 93.5%—Not comparable
CharXiv w/o toolsSource 88.9%—Not comparable
Frequently Asked Questions (2)

Which is better, Claude Mythos 5 or Soofi S 30B-A3B?

Claude Mythos 5 is ahead on BenchLM's provisional leaderboard, 89 to 45. The biggest single separator in this matchup is GPQA, where the scores are 94.1% and 43.4%.

Which is better for knowledge tasks, Claude Mythos 5 or Soofi S 30B-A3B?

Claude Mythos 5 has the edge for knowledge tasks in this comparison, averaging 68.5 versus 49.9. Inside this category, GPQA is the benchmark that creates the most daylight between them.

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