Benchmark scores
Higher is better for all benchmark scores (SWE-bench, GPQA, HLE, Terminal-Bench, etc.). Green marks the model with the higher score.
LLM Comparison
Claude Opus 5.5 vs GPT-6.1 Terra: benchmark scores, pricing & comparison.
Side-by-side Claude Opus 5.5 vs GPT-6.1 Terra comparison across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, context window, and AskClash RWT. Green marks the winner on each benchmark.
Verdict: Claude Opus 5.5 ranks higher (#2 vs #35) and wins 5 of 5 shared benchmarks; GPT-6.1 Terra costs less ($1.00/$5.00 vs $4.00/$20.0 per 1M tokens).
Rank #2 vs #35AskClash overall scores 78.6 vs 61.7.
Pricing $4.00/$20.0 vs $1.00/$5.00Input and output token prices per 1M tokens when published.
Proprietary vs ProprietaryAnthropic vs OpenAI.
Claude Opus 5.5 vs GPT-6.1 Terra benchmark comparison
Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.
| Metric | Claude Opus 5.5 | GPT-6.1 Terra |
|---|---|---|
| Overall Score | 78.6 | 61.7 |
| Leaderboard Rank | #2 | #35 |
| ACB | 76.5 | 62.1 |
| HLE | 67.7 | 46.2 |
| SWE-Pro | 89.9 | — |
| Terminal-Bench | 59.6 | 55.6 |
| DeepSWE | 74.2 | — |
| GDPval-AA | 1846.2 | 1467.6 |
| Finance Agent | 58.6 | — |
| MMMU-Pro | 87.7 | 84.7 |
| Input Price (per 1M tokens) | $4.00 | $1.00 |
| Output Price (per 1M tokens) | $20.0 | $5.00 |
| Context Window | 1M | 1.05M |
| Benchmarks Published | 11 | 8 |
Claude Opus 5.5 vs GPT-6.1 Terra head-to-head charts
Claude Opus 5.5 leads 6 and GPT-6.1 Terra leads 0 of 6 shared benchmarks. GPT-6.1 Terra is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.
Claude Opus 5.5GPT-6.1 Terra
Overall
ACB
HLE
Terminal-Bench
GDPval-AA
MMMU-Pro
Claude Opus 5.5
Input$4.00
Output$20.0
Workload$8.00
Context1M
GPT-6.1 Terra
Input$1.00
Output$5.00
Workload$2.00
Context1.05M
Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.
More Claude Opus 5.5 and GPT-6.1 Terra comparisons
Explore how Claude Opus 5.5 and GPT-6.1 Terra stack up against other top-ranked LLMs.
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How to read this comparison
Token pricing
Lower is better for input and output prices. Green marks the cheaper model per 1M tokens.
Coverage matters
Models with fewer disclosed benchmark cells may have inflated percentile scores. Check the benchmark cell count for context.
This comparison page is generated from the AskClash LLM leaderboard cache. Open the live leaderboard for real-time scores and interactive filtering.