How do GPT-6 Astra and GPT-5.5 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-5.5 when publicly disclosed.

LLM Comparison

GPT-6 Astra vs GPT-5.5: benchmark scores, pricing & comparison.

Q: Which is better: GPT-6 Astra or GPT-5.5?

AskClash compares GPT-6 Astra and GPT-5.5 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-5.5 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-5.5 model page

Rank #7 vs #13AskClash overall scores 64.9 vs 61.9.

Pricing $10.0/$50.0 vs $5.00/$30.0Input and output token prices per 1M tokens when published.

Proprietary vs ProprietaryOpenAI vs OpenAI.

GPT-6 Astra vs GPT-5.5 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-5.5
Overall Score	64.9	61.9
Leaderboard Rank	#7	#13
ACB	—	62.0
RWT	9.5	8.0
Coding Agent Index	67.0	61.0
HLE	57.2	52.2
GPQA	96.0	93.6
SWE-Pro	—	58.6
Terminal-Bench	—	82.7
DeepSWE	74.1	67.0
OSWorld	—	78.7
MCP Atlas	—	75.3
Finance Agent	—	51.8
MMMU-Pro	—	81.2
ARC-AGI 2	95.0	85.0
Tau2	—	98.0
MRCR	100.0	—
Input Price (per 1M tokens)	$10.0	$5.00
Output Price (per 1M tokens)	$50.0	$30.0
Context Window	1M	1M
Benchmarks Published	7	14

GPT-6 Astra vs GPT-5.5 head-to-head charts

GPT-6 Astra leads 7 and GPT-5.5 leads 0 of 7 shared benchmarks. GPT-5.5 is cheaper on a defined 1M-input / 200K-output workload. Charts show only benchmarks both models publish.

GPT-6 AstraGPT-5.5

Overall

64.9GPT-6 Astra

61.9GPT-5.5

RWT

9.5GPT-6 Astra

8.0GPT-5.5

Coding Agent Index

67.0GPT-6 Astra

61.0GPT-5.5

HLE

57.2GPT-6 Astra

52.2GPT-5.5

GPQA

96.0GPT-6 Astra

93.6GPT-5.5

DeepSWE

74.1GPT-6 Astra

67.0GPT-5.5

ARC-AGI 2

95.0GPT-6 Astra

85.0GPT-5.5

GPT-6 Astra

Input$10.0

Output$50.0

Workload$20

Context1M

GPT-5.5

Input$5.00

Output$30.0

Workload$11

Context1M

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

More GPT-6 Astra and GPT-5.5 comparisons

Explore how GPT-6 Astra and GPT-5.5 stack up against other top-ranked LLMs.

Claude Fable 5.1 vs GPT-6 Astra Claude Fable 5.1 vs GPT-5.5 Claude Fable 5 vs GPT-6 Astra Claude Fable 5 vs GPT-5.5 GPT-5.6 Sol vs GPT-6 Astra GPT-5.6 Sol vs GPT-5.5 Claude Opus 5 vs GPT-6 Astra Claude Opus 5 vs GPT-5.5 Grok 4.6 vs GPT-6 Astra Grok 4.6 vs GPT-5.5

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.