How do GPT-6 Astra and GPT-5.6 Terra 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-6 Astra and GPT-5.6 Terra when publicly disclosed.

LLM Comparison

GPT-6 Astra vs GPT-5.6 Terra: benchmark scores, pricing & comparison.

Q: Which is better: GPT-6 Astra or GPT-5.6 Terra?

AskClash compares GPT-6 Astra and GPT-5.6 Terra side by side across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, AskClash ACB, and context window so you can see which model wins on each benchmark.

Side-by-side GPT-6 Astra 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 leaderboard GPT-6 Astra model page GPT-5.6 Terra model page

Rank #7 vs #15AskClash overall scores 64.9 vs 60.0.

Pricing $10.0/$50.0 vs $2.50/$15.0Input and output token prices per 1M tokens when published.

Proprietary vs ProprietaryOpenAI vs OpenAI.

GPT-6 Astra 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.

Metric	GPT-6 Astra	GPT-5.6 Terra
Overall Score	64.9	60.0
Leaderboard Rank	#7	#15
ACB	—	56.4
RWT	9.5	8.5
Coding Agent Index	67.0	77.0
HLE	57.2	—
GPQA	96.0	92.9
SWE-Pro	—	63.4
SWE-Atlas	—	81.0
Terminal-Bench	—	87.4
DeepSWE	74.1	69.6
GDPval-AA	—	1593.0
Finance Agent	—	54.4
MMMU-Pro	—	80.7
ARC-AGI 2	95.0	83.9
Tau2	—	86.3
MRCR	100.0	89.6
Input Price (per 1M tokens)	$10.0	$2.50
Output Price (per 1M tokens)	$50.0	$15.0
Context Window	1M	1M
Benchmarks Published	7	14

GPT-6 Astra vs GPT-5.6 Terra head-to-head charts

GPT-6 Astra leads 6 and GPT-5.6 Terra leads 1 of 7 shared benchmarks. GPT-5.6 Terra is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.

GPT-6 AstraGPT-5.6 Terra

Overall

64.9GPT-6 Astra

60.0GPT-5.6 Terra

RWT

9.5GPT-6 Astra

8.5GPT-5.6 Terra

Coding Agent Index

67.0GPT-6 Astra

77.0GPT-5.6 Terra

GPQA

96.0GPT-6 Astra

92.9GPT-5.6 Terra

DeepSWE

74.1GPT-6 Astra

69.6GPT-5.6 Terra

ARC-AGI 2

95.0GPT-6 Astra

83.9GPT-5.6 Terra

MRCR

100.0GPT-6 Astra

89.6GPT-5.6 Terra

GPT-6 Astra

Input$10.0

Output$50.0

Workload$20

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 GPT-6 Astra and GPT-5.6 Terra comparisons

Explore how GPT-6 Astra and GPT-5.6 Terra stack up against other top-ranked LLMs.

Claude Fable 5.1 vs GPT-6 Astra Claude Fable 5.1 vs GPT-5.6 Terra Claude Fable 5 vs GPT-6 Astra Claude Fable 5 vs GPT-5.6 Terra GPT-5.6 Sol vs GPT-6 Astra GPT-5.6 Sol vs GPT-5.6 Terra Claude Opus 5 vs GPT-6 Astra Claude Opus 5 vs GPT-5.6 Terra Grok 4.6 vs GPT-6 Astra Grok 4.6 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.