Claude Mythos 5 vs
o3-mini

Read the published evidence, route context, and missing facts before making a local decision. This page does not name a universal winner.

Models in this comparison

Provider identity and evidence state stay balanced across the pair.

A
Model type
Proprietary
Evidence state
Supported evidence
Published context
1,000,000
VS
O

OpenAI

o3-mini

Model type
Proprietary
Evidence state
Supported evidence
Published context
200,000

Key implications

Limited shared-metric coverage. Each finding is tied to a published metric, price, context, or modality fact.

  1. On Overall, Claude Mythos 5 has a higher supported BenchLM score (83.4 vs 46.94).
  2. Input API price: o3-mini has the lower verified rate ($1.1 / 1M tokens vs $10 / 1M tokens).
  3. Output API price: o3-mini has the lower verified rate ($4.4 / 1M tokens vs $50 / 1M tokens).
  4. Context window: Claude Mythos 5 has the larger published context window (1,000,000 tokens vs 200,000 tokens).

Shared metric view

A radar is shown only when at least four compatible supported score metrics are published.

Comparable metric detail

  • AgenticClaude Mythos 5: 75.79 · o3-mini: Unavailable
  • CodingClaude Mythos 5: 81.66 · o3-mini: 47.54
  • InstructionFollowingClaude Mythos 5: Unavailable · o3-mini: 91.2
  • KnowledgeClaude Mythos 5: 97.4 · o3-mini: 68.5
  • MultimodalGroundedClaude Mythos 5: 84.8 · o3-mini: Unavailable
  • OverallClaude Mythos 5: 83.4 · o3-mini: 46.94

Source metrics

Friendly metric names and published units stay visible. Missing measurements remain unavailable rather than becoming a score.

Source metric comparison
MetricUnitClaude Mythos 5o3-mini
Agenticscore75.79Unavailable
Codingscore81.6647.54
InstructionFollowingscoreUnavailable91.2
Knowledgescore97.468.5
MultimodalGroundedscore84.8Unavailable
Overallscore83.446.94

Agentic

Unit
score
Claude Mythos 5
75.79
o3-mini
Unavailable

Coding

Unit
score
Claude Mythos 5
81.66
o3-mini
47.54

InstructionFollowing

Unit
score
Claude Mythos 5
Unavailable
o3-mini
91.2

Knowledge

Unit
score
Claude Mythos 5
97.4
o3-mini
68.5

MultimodalGrounded

Unit
score
Claude Mythos 5
84.8
o3-mini
Unavailable

Overall

Unit
score
Claude Mythos 5
83.4
o3-mini
46.94

Pricing and context

Verification is shown beside each selected route. Missing facts remain Not verified.

Route pricing and context comparison
FieldUnitClaude Mythos 5o3-mini
Input API priceUSD / 1M tokens$10$1.1
Cached input API priceUSD / 1M tokens$1Not verified
Output API priceUSD / 1M tokens$50$4.4
Route contexttokens1,000,000200,000
Input modalitiespublished listNot verifiedNot verified
Output modalitiespublished listNot verifiedNot verified

Input API price

Unit
USD / 1M tokens
Claude Mythos 5
$10
o3-mini
$1.1

Cached input API price

Unit
USD / 1M tokens
Claude Mythos 5
$1
o3-mini
Not verified

Output API price

Unit
USD / 1M tokens
Claude Mythos 5
$50
o3-mini
$4.4

Route context

Unit
tokens
Claude Mythos 5
1,000,000
o3-mini
200,000

Input modalities

Unit
published list
Claude Mythos 5
Not verified
o3-mini
Not verified

Output modalities

Unit
published list
Claude Mythos 5
Not verified
o3-mini
Not verified

Evidence provenance

Source records, route identity, timestamps, and methodology are consolidated here without declaring either model a winner.

Publication time
Aug 30, 2026, 2:15 AM UTC
Freshness
Stale — Published weekly benchmark evidence has not refreshed within 8 days.
Methodology
benchlm: benchlm_raw_composite
Model records
  • Claude Mythos 5 — source benchlm · artifact models · model claude-mythos-5
  • o3-mini — source benchlm · artifact models · model o3-mini
Selected price routes
  • Claude Mythos 5 — route benchlm:claude-mythos-5 · source benchlm · provider anthropic
  • o3-mini — route benchlm:o3-mini · source benchlm · provider openai

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