A
Anthropic
Claude Opus 4.8
- Model type
- Proprietary
- Evidence state
- Supported evidence
- Published context
- 1,000,000
Claude Opus 4.8 vs
GPT-5.6 Terra
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-5.6 Terra
- Model type
- Proprietary
- Evidence state
- Estimated evidence
- Published context
- 1,050,000
Key implications
Insufficient shared-metric coverage. Each finding is tied to a published metric, price, context, or modality fact.
- Input API price: GPT-5.6 Terra has the lower verified rate ($2.5 / 1M tokens vs $5 / 1M tokens).
- Output API price: GPT-5.6 Terra has the lower verified rate ($15 / 1M tokens vs $25 / 1M tokens).
- Context window: GPT-5.6 Terra has the larger published context window (1,050,000 tokens vs 1,000,000 tokens).
Shared metric view
A radar is shown only when at least four compatible supported score metrics are published.
Comparable metric detail
- AgenticClaude Opus 4.8: 61.78 · GPT-5.6 Terra: 58.86
- CodingClaude Opus 4.8: 71.98 · GPT-5.6 Terra: 69.29
- KnowledgeClaude Opus 4.8: 86.8 · GPT-5.6 Terra: 84.2
- MathClaude Opus 4.8: 66.8 · GPT-5.6 Terra: 97
- MultimodalGroundedClaude Opus 4.8: 85.4 · GPT-5.6 Terra: 71.4
- ReasoningClaude Opus 4.8: 68.3 · GPT-5.6 Terra: 78.1
- OverallClaude Opus 4.8: 76.6 · GPT-5.6 Terra: 72.95
Source metrics
Friendly metric names and published units stay visible. Missing measurements remain unavailable rather than becoming a score.
| Metric | Unit | Claude Opus 4.8 | GPT-5.6 Terra |
|---|---|---|---|
| Agentic | score | 61.78 | 58.86 |
| Coding | score | 71.98 | 69.29 |
| Knowledge | score | 86.8 | 84.2 |
| Math | score | 66.8 | 97 |
| MultimodalGrounded | score | 85.4 | 71.4 |
| Reasoning | score | 68.3 | 78.1 |
| Overall | score | 76.6 | 72.95 |
Agentic
- Unit
- score
- Claude Opus 4.8
- 61.78
- GPT-5.6 Terra
- 58.86
Coding
- Unit
- score
- Claude Opus 4.8
- 71.98
- GPT-5.6 Terra
- 69.29
Knowledge
- Unit
- score
- Claude Opus 4.8
- 86.8
- GPT-5.6 Terra
- 84.2
Math
- Unit
- score
- Claude Opus 4.8
- 66.8
- GPT-5.6 Terra
- 97
MultimodalGrounded
- Unit
- score
- Claude Opus 4.8
- 85.4
- GPT-5.6 Terra
- 71.4
Reasoning
- Unit
- score
- Claude Opus 4.8
- 68.3
- GPT-5.6 Terra
- 78.1
Overall
- Unit
- score
- Claude Opus 4.8
- 76.6
- GPT-5.6 Terra
- 72.95
Pricing and context
Verification is shown beside each selected route. Missing facts remain Not verified.
| Field | Unit | Claude Opus 4.8 | GPT-5.6 Terra |
|---|---|---|---|
| Input API price | USD / 1M tokens | $5 | $2.5 |
| Cached input API price | USD / 1M tokens | Not verified | $0.25 |
| Output API price | USD / 1M tokens | $25 | $15 |
| Route context | tokens | 1,000,000 | 1,050,000 |
| Input modalities | published list | Not verified | Not verified |
| Output modalities | published list | Not verified | Not verified |
Input API price
- Unit
- USD / 1M tokens
- Claude Opus 4.8
- $5
- GPT-5.6 Terra
- $2.5
Cached input API price
- Unit
- USD / 1M tokens
- Claude Opus 4.8
- Not verified
- GPT-5.6 Terra
- $0.25
Output API price
- Unit
- USD / 1M tokens
- Claude Opus 4.8
- $25
- GPT-5.6 Terra
- $15
Route context
- Unit
- tokens
- Claude Opus 4.8
- 1,000,000
- GPT-5.6 Terra
- 1,050,000
Input modalities
- Unit
- published list
- Claude Opus 4.8
- Not verified
- GPT-5.6 Terra
- Not verified
Output modalities
- Unit
- published list
- Claude Opus 4.8
- Not verified
- GPT-5.6 Terra
- Not verified
Evidence provenance
Source records, route identity, timestamps, and methodology are consolidated here without declaring either model a winner.
- Publication time
- Sep 14, 2026, 12:37 AM UTC
- Freshness
- Stale — Published benchmark evidence includes benchlm content observed outside the 8-day evidence window.
- Methodology
- benchlm: benchlm_raw_composite
- Model records
- Claude Opus 4.8 — source benchlm · artifact models · model claude-opus-4-8
- GPT-5.6 Terra — source benchlm · artifact models · model gpt-5-6-terra
- Selected price routes
- Claude Opus 4.8 — route benchlm:claude-opus-4-8 · source benchlm · provider anthropic
- GPT-5.6 Terra — route benchlm:gpt-5-6-terra · source benchlm · provider openai
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