A
Anthropic
Claude Mythos 5
- Model type
- Proprietary
- Evidence state
- Supported evidence
- Published context
- 1,000,000
Claude Mythos 5 vs
GPT-5.5
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.
O
OpenAI
GPT-5.5
- 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.
- Input API price: GPT-5.5 has the lower verified rate ($5 / 1M tokens vs $10 / 1M tokens).
- Output API price: GPT-5.5 has the lower verified rate ($30 / 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-5.5: 64.71
- CodingClaude Mythos 5: 81.66 · GPT-5.5: 72.5
- KnowledgeClaude Mythos 5: 97.4 · GPT-5.5: 77.7
- MathClaude Mythos 5: Unavailable · GPT-5.5: 71.1
- MultimodalGroundedClaude Mythos 5: 84.8 · GPT-5.5: 65.3
- ReasoningClaude Mythos 5: Unavailable · GPT-5.5: 79
- OverallClaude Mythos 5: 83.4 · GPT-5.5: 72.92
Source metrics
Friendly metric names and published units stay visible. Missing measurements remain unavailable rather than becoming a score.
| Metric | Unit | Claude Mythos 5 | GPT-5.5 |
|---|---|---|---|
| Agentic | score | 75.79 | 64.71 |
| Coding | score | 81.66 | 72.5 |
| Knowledge | score | 97.4 | 77.7 |
| Math | score | Unavailable | 71.1 |
| MultimodalGrounded | score | 84.8 | 65.3 |
| Reasoning | score | Unavailable | 79 |
| Overall | score | 83.4 | 72.92 |
Agentic
- Unit
- score
- Claude Mythos 5
- 75.79
- GPT-5.5
- 64.71
Coding
- Unit
- score
- Claude Mythos 5
- 81.66
- GPT-5.5
- 72.5
Knowledge
- Unit
- score
- Claude Mythos 5
- 97.4
- GPT-5.5
- 77.7
Math
- Unit
- score
- Claude Mythos 5
- Unavailable
- GPT-5.5
- 71.1
MultimodalGrounded
- Unit
- score
- Claude Mythos 5
- 84.8
- GPT-5.5
- 65.3
Reasoning
- Unit
- score
- Claude Mythos 5
- Unavailable
- GPT-5.5
- 79
Overall
- Unit
- score
- Claude Mythos 5
- 83.4
- GPT-5.5
- 72.92
Pricing and context
Verification is shown beside each selected route. Missing facts remain Not verified.
| Field | Unit | Claude Mythos 5 | GPT-5.5 |
|---|---|---|---|
| Input API price | USD / 1M tokens | $10 | $5 |
| Cached input API price | USD / 1M tokens | $1 | $0.5 |
| Output API price | USD / 1M tokens | $50 | $30 |
| Route context | tokens | 1,000,000 | 1,000,000 |
| Input modalities | published list | Not verified | Not verified |
| Output modalities | published list | Not verified | Not verified |
Input API price
- Unit
- USD / 1M tokens
- Claude Mythos 5
- $10
- GPT-5.5
- $5
Cached input API price
- Unit
- USD / 1M tokens
- Claude Mythos 5
- $1
- GPT-5.5
- $0.5
Output API price
- Unit
- USD / 1M tokens
- Claude Mythos 5
- $50
- GPT-5.5
- $30
Route context
- Unit
- tokens
- Claude Mythos 5
- 1,000,000
- GPT-5.5
- 1,000,000
Input modalities
- Unit
- published list
- Claude Mythos 5
- Not verified
- GPT-5.5
- Not verified
Output modalities
- Unit
- published list
- Claude Mythos 5
- Not verified
- GPT-5.5
- 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-5.5 — source benchlm · artifact models · model gpt-5-5
- Selected price routes
- Claude Mythos 5 — route benchlm:claude-mythos-5 · source benchlm · provider anthropic
- GPT-5.5 — route benchlm:gpt-5-5 · source benchlm · provider openai
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