GPT-6 Luna vs Claude Haiku 5.5
Task by task
A score turns orange only when that model wins clearly more of the task's test cases. Under each score, the average time per test case on the machine it ran on. Claude Haiku 5.5 spends 2.2× as many thinking tokens per test case.
TaskAGPT-6 LunaBClaude Haiku 5.5
Overall
6149.1s
7025.5s
Agents
561m 18s
6139.5s
Structured Extraction
9514.5s
9013.5s
Coding
732m 18s
8630.6s
Grounded Answers
6715.6s
7613.9s
Instruction Following
8432.3s
9431.5s
Business Logic
3743.1s
6726.0s
Security & permissions
6224.5s
6723.4s
Diagnosis & investigation
1737.7s
1725.5s
What you'd run
The build behind each score. Orange marks the faster, smaller, cheaper or longer-context side.
SpecAGPT-6 LunaBClaude Haiku 5.5
Speed
90 tok/s
225 tok/s (better)
Machine
Hosted
Hosted
Memory at 32K
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Context
1.1M (better)
1M
Cost per run
$0.10 (better)
$0.42
Cost per case
$0.00067 (better)
$0.0028
Time per case
49.1s
25.5s (better)
Quantization
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Harness
openrouter
openrouter
The race
Each model's running score as the test cases go by. The dashed line is a perfect run.
Every test case
Each square is one test case, colored by the model that scored higher.
Agents
Structured Extraction
Coding
Grounded Answers
Instruction Following
Business Logic
Security & permissions
Diagnosis & investigation