Claude Haiku 5.5 vs GPT-6 Luna
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.
TaskAClaude Haiku 5.5BGPT-6 Luna
Overall
7025.5s
6149.1s
Agents
6139.5s
561m 18s
Structured Extraction
9013.5s
9514.5s
Coding
8630.6s
732m 18s
Grounded Answers
7613.9s
6715.6s
Instruction Following
9431.5s
8432.3s
Business Logic
6726.0s
3743.1s
Security & permissions
6723.4s
6224.5s
Diagnosis & investigation
1725.5s
1737.7s
What you'd run
The build behind each score. Orange marks the faster, smaller, cheaper or longer-context side.
SpecAClaude Haiku 5.5BGPT-6 Luna
Speed
225 tok/s (better)
90 tok/s
Machine
Hosted
Hosted
Memory at 32K
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Context
1M
1.1M (better)
Cost per run
$0.42
$0.10 (better)
Cost per case
$0.0028
$0.00067 (better)
Time per case
25.5s (better)
49.1s
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