LLM Comparison

Claude Opus 5 vs GPT-5.6 Terra: benchmark scores, pricing & comparison.

Side-by-side Claude Opus 5 vs GPT-5.6 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.

Open live leaderboardClaude Opus 5 model pageGPT-5.6 Terra model page
Rank #2 vs #10AskClash overall scores 77.3 vs 65.0.
Pricing $5.00/$25.0 vs $2.50/$15.0Input and output token prices per 1M tokens when published.
Proprietary vs ProprietaryAnthropic vs OpenAI.

Claude Opus 5 vs GPT-5.6 Terra benchmark comparison

Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.

MetricClaude Opus 5GPT-5.6 Terra
Overall Score77.365.0
Leaderboard Rank#2#10
ACB70.556.4
RWT9.08.5
Coding Agent Index68.177.0
HLE64.742.9
GPQA93.292.9
IFEval—71.2
SWE-bench96.0—
SWE-Pro79.263.4
SWE-Atlas54.881.0
Terminal-Bench89.187.4
DeepSWE73.669.6
GDPval-AA1861.01593.0
MCP Atlas85.8—
Finance Agent58.654.4
MMMU-Pro84.780.7
ARC-AGI 290.483.9
Tau2—86.3
MRCR—89.6
Input Price (per 1M tokens)$5.00$2.50
Output Price (per 1M tokens)$25.0$15.0
Context Window1M1M
Benchmarks Published1516

Claude Opus 5 vs GPT-5.6 Terra head-to-head charts

Claude Opus 5 leads 12 and GPT-5.6 Terra leads 2 of 14 shared benchmarks. GPT-5.6 Terra is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.

Claude Opus 5GPT-5.6 Terra
Overall
77.3Claude Opus 5
65.0GPT-5.6 Terra
ACB
70.5Claude Opus 5
56.4GPT-5.6 Terra
RWT
9.0Claude Opus 5
8.5GPT-5.6 Terra
Coding Agent Index
68.1Claude Opus 5
77.0GPT-5.6 Terra
HLE
64.7Claude Opus 5
42.9GPT-5.6 Terra
GPQA
93.2Claude Opus 5
92.9GPT-5.6 Terra
SWE-Pro
79.2Claude Opus 5
63.4GPT-5.6 Terra
SWE-Atlas
54.8Claude Opus 5
81.0GPT-5.6 Terra
Terminal-Bench
89.1Claude Opus 5
87.4GPT-5.6 Terra
DeepSWE
73.6Claude Opus 5
69.6GPT-5.6 Terra
GDPval-AA
1861.0Claude Opus 5
1593.0GPT-5.6 Terra
Finance Agent
58.6Claude Opus 5
54.4GPT-5.6 Terra
Claude Opus 5
Input$5.00
Output$25.0
Workload$10
Context1M
GPT-5.6 Terra
Input$2.50
Output$15.0
Workload$5.50
Context1M

Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.

More Claude Opus 5 and GPT-5.6 Terra comparisons

Explore how Claude Opus 5 and GPT-5.6 Terra stack up against other top-ranked LLMs.

Claude Fable 5.1 vs Claude Opus 5Claude Fable 5.1 vs GPT-5.6 TerraClaude Opus 5 vs Claude Fable 5Claude Fable 5 vs GPT-5.6 TerraClaude Opus 5 vs GPT-5.6 SolGPT-5.6 Sol vs GPT-5.6 TerraClaude Opus 5 vs GPT-6 AstraGPT-6 Astra vs GPT-5.6 TerraClaude Opus 5 vs Claude Opus 4.8Claude Opus 4.8 vs GPT-5.6 Terra

How to read this comparison

Benchmark scores

Higher is better for all benchmark scores (SWE-bench, GPQA, HLE, Terminal-Bench, etc.). Green marks the model with the higher score.

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.