Claude Mythos 5 vs
GPT-5.2

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

GPT-5.2

Model type
Proprietary
Evidence state
Estimated evidence
Published context
400,000

Key implications

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

  1. Input API price: GPT-5.2 has the lower verified rate ($1.75 / 1M tokens vs $10 / 1M tokens).
  2. Output API price: GPT-5.2 has the lower verified rate ($14 / 1M tokens vs $50 / 1M tokens).
  3. Context window: Claude Mythos 5 has the larger published context window (1,000,000 tokens vs 400,000 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 · GPT-5.2: 43.58
  • CodingClaude Mythos 5: 81.66 · GPT-5.2: 54.6
  • KnowledgeClaude Mythos 5: 97.4 · GPT-5.2: 83.7
  • MathClaude Mythos 5: Unavailable · GPT-5.2: 58.4
  • MultimodalGroundedClaude Mythos 5: 84.8 · GPT-5.2: 62.9
  • ReasoningClaude Mythos 5: Unavailable · GPT-5.2: 52.3
  • OverallClaude Mythos 5: 83.4 · GPT-5.2: 58.39

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-5.2
Agenticscore75.7943.58
Codingscore81.6654.6
Knowledgescore97.483.7
MathscoreUnavailable58.4
MultimodalGroundedscore84.862.9
ReasoningscoreUnavailable52.3
Overallscore83.458.39

Agentic

Unit
score
Claude Mythos 5
75.79
GPT-5.2
43.58

Coding

Unit
score
Claude Mythos 5
81.66
GPT-5.2
54.6

Knowledge

Unit
score
Claude Mythos 5
97.4
GPT-5.2
83.7

Math

Unit
score
Claude Mythos 5
Unavailable
GPT-5.2
58.4

MultimodalGrounded

Unit
score
Claude Mythos 5
84.8
GPT-5.2
62.9

Reasoning

Unit
score
Claude Mythos 5
Unavailable
GPT-5.2
52.3

Overall

Unit
score
Claude Mythos 5
83.4
GPT-5.2
58.39

Pricing and context

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

Route pricing and context comparison
FieldUnitClaude Mythos 5GPT-5.2
Input API priceUSD / 1M tokens$10$1.75
Cached input API priceUSD / 1M tokens$1Not verified
Output API priceUSD / 1M tokens$50$14
Route contexttokens1,000,000400,000
Input modalitiespublished listNot verifiedNot verified
Output modalitiespublished listNot verifiedNot verified

Input API price

Unit
USD / 1M tokens
Claude Mythos 5
$10
GPT-5.2
$1.75

Cached input API price

Unit
USD / 1M tokens
Claude Mythos 5
$1
GPT-5.2
Not verified

Output API price

Unit
USD / 1M tokens
Claude Mythos 5
$50
GPT-5.2
$14

Route context

Unit
tokens
Claude Mythos 5
1,000,000
GPT-5.2
400,000

Input modalities

Unit
published list
Claude Mythos 5
Not verified
GPT-5.2
Not verified

Output modalities

Unit
published list
Claude Mythos 5
Not verified
GPT-5.2
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-5.2 — source benchlm · artifact models · model gpt-5-2
Selected price routes
  • Claude Mythos 5 — route benchlm:claude-mythos-5 · source benchlm · provider anthropic
  • GPT-5.2 — route benchlm:gpt-5-2 · source benchlm · provider openai

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