How do GPT-5.6 Terra and GPT-5.4 compare on coding benchmarks?

The comparison table shows SWE-bench, SWE-Pro, SWE-Atlas, Terminal-Bench, DeepSWE, and coding agent index scores for both GPT-5.6 Terra and GPT-5.4 when publicly disclosed.

LLM Comparison

GPT-5.6 Terra vs GPT-5.4: benchmark scores, pricing & comparison.

Q: Which is better: GPT-5.6 Terra or GPT-5.4?

AskClash compares GPT-5.6 Terra and GPT-5.4 side by side across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, and context window so you can see which model wins on each benchmark.

Side-by-side GPT-5.6 Terra vs GPT-5.4 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 leaderboard GPT-5.6 Terra model page GPT-5.4 model page

Rank #11 vs #14AskClash overall scores 68.9 vs 64.7.

Pricing $2.50/$15.0 vs $2.50/$15.0Input and output token prices per 1M tokens when published.

Proprietary vs ProprietaryOpenAI vs OpenAI.

GPT-5.6 Terra vs GPT-5.4 benchmark comparison

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

Metric	GPT-5.6 Terra	GPT-5.4
Overall Score	68.9	64.7
Leaderboard Rank	#11	#14
RWT	8.5	8.0
Coding Agent Index	77.0	39.1
HLE	—	52.1
GPQA	92.9	92.8
SWE-Pro	63.4	57.7
SWE-Atlas	81.0	—
Terminal-Bench	87.4	75.1
DeepSWE	69.6	51.8
OSWorld	—	75.0
MCP Atlas	—	70.6
Finance Agent	52.4	—
CharXiv	—	82.8
MMMU-Pro	80.7	81.2
ARC-AGI 2	83.9	74.0
Tau2	86.3	98.9
MRCR	89.6	97.3
Input Price (per 1M tokens)	$2.50	$2.50
Output Price (per 1M tokens)	$15.0	$15.0
Context Window	1M	1M
Benchmarks Published	14	15

GPT-5.6 Terra vs GPT-5.4 head-to-head charts

GPT-5.6 Terra leads 8 and GPT-5.4 leads 3 of 11 shared benchmarks. Charts show only benchmarks both models publish.

GPT-5.6 TerraGPT-5.4

Overall

68.9GPT-5.6 Terra

64.7GPT-5.4

RWT

8.5GPT-5.6 Terra

8.0GPT-5.4

Coding Agent Index

77.0GPT-5.6 Terra

39.1GPT-5.4

GPQA

92.9GPT-5.6 Terra

92.8GPT-5.4

SWE-Pro

63.4GPT-5.6 Terra

57.7GPT-5.4

Terminal-Bench

87.4GPT-5.6 Terra

75.1GPT-5.4

DeepSWE

69.6GPT-5.6 Terra

51.8GPT-5.4

MMMU-Pro

80.7GPT-5.6 Terra

81.2GPT-5.4

ARC-AGI 2

83.9GPT-5.6 Terra

74.0GPT-5.4

Tau2

86.3GPT-5.6 Terra

98.9GPT-5.4

MRCR

89.6GPT-5.6 Terra

97.3GPT-5.4

GPT-5.6 Terra

Input$2.50

Output$15.0

Workload$5.50

Context1M

GPT-5.4

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 GPT-5.6 Terra and GPT-5.4 comparisons

Explore how GPT-5.6 Terra and GPT-5.4 stack up against other top-ranked LLMs.

Claude Opus 5 vs GPT-5.6 Terra Claude Opus 5 vs GPT-5.4 Claude Fable 5 vs GPT-5.6 Terra Claude Fable 5 vs GPT-5.4 GPT-5.6 Sol vs GPT-5.6 Terra GPT-5.6 Sol vs GPT-5.4 Claude Opus 4.8 vs GPT-5.6 Terra Claude Opus 4.8 vs GPT-5.4 Kimi K3 vs GPT-5.6 Terra Kimi K3 vs GPT-5.4

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.