Claude Mythos 5 vs
GPT-4.1 nano

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
Model type
Proprietary
Evidence state
Estimated evidence
Published context
1,000,000

Key implications

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

  1. Input API price: GPT-4.1 nano has the lower verified rate ($0.1 / 1M tokens vs $10 / 1M tokens).
  2. Output API price: GPT-4.1 nano has the lower verified rate ($0.4 / 1M tokens vs $50 / 1M 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 · GPT-4.1 nano: 41.08
  • CodingClaude Mythos 5: 81.66 · GPT-4.1 nano: 42.73
  • InstructionFollowingClaude Mythos 5: Unavailable · GPT-4.1 nano: 60
  • KnowledgeClaude Mythos 5: 97.4 · GPT-4.1 nano: 41.5
  • MathClaude Mythos 5: Unavailable · GPT-4.1 nano: 25.6
  • MultimodalGroundedClaude Mythos 5: 84.8 · GPT-4.1 nano: Unavailable
  • OverallClaude Mythos 5: 83.4 · GPT-4.1 nano: 42.43

Source metrics

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

Source metric comparison
MetricUnitClaude Mythos 5GPT-4.1 nano
Agenticscore75.7941.08
Codingscore81.6642.73
InstructionFollowingscoreUnavailable60
Knowledgescore97.441.5
MathscoreUnavailable25.6
MultimodalGroundedscore84.8Unavailable
Overallscore83.442.43

Agentic

Unit
score
Claude Mythos 5
75.79
GPT-4.1 nano
41.08

Coding

Unit
score
Claude Mythos 5
81.66
GPT-4.1 nano
42.73

InstructionFollowing

Unit
score
Claude Mythos 5
Unavailable
GPT-4.1 nano
60

Knowledge

Unit
score
Claude Mythos 5
97.4
GPT-4.1 nano
41.5

Math

Unit
score
Claude Mythos 5
Unavailable
GPT-4.1 nano
25.6

MultimodalGrounded

Unit
score
Claude Mythos 5
84.8
GPT-4.1 nano
Unavailable

Overall

Unit
score
Claude Mythos 5
83.4
GPT-4.1 nano
42.43

Pricing and context

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

Route pricing and context comparison
FieldUnitClaude Mythos 5GPT-4.1 nano
Input API priceUSD / 1M tokens$10$0.1
Cached input API priceUSD / 1M tokens$1Not verified
Output API priceUSD / 1M tokens$50$0.4
Route contexttokens1,000,0001,000,000
Input modalitiespublished listNot verifiedNot verified
Output modalitiespublished listNot verifiedNot verified

Input API price

Unit
USD / 1M tokens
Claude Mythos 5
$10
GPT-4.1 nano
$0.1

Cached input API price

Unit
USD / 1M tokens
Claude Mythos 5
$1
GPT-4.1 nano
Not verified

Output API price

Unit
USD / 1M tokens
Claude Mythos 5
$50
GPT-4.1 nano
$0.4

Route context

Unit
tokens
Claude Mythos 5
1,000,000
GPT-4.1 nano
1,000,000

Input modalities

Unit
published list
Claude Mythos 5
Not verified
GPT-4.1 nano
Not verified

Output modalities

Unit
published list
Claude Mythos 5
Not verified
GPT-4.1 nano
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
  • GPT-4.1 nano — source benchlm · artifact models · model gpt-4-1-nano
Selected price routes
  • Claude Mythos 5 — route benchlm:claude-mythos-5 · source benchlm · provider anthropic
  • GPT-4.1 nano — route benchlm:gpt-4-1-nano · source benchlm · provider openai

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