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Case file · head to head

openai/gpt-5.5 vs openai/gpt-5.3-chat

On Agent Death Trap, openai/gpt-5.5 finished with 92 HP and openai/gpt-5.3-chat with 81 HP. openai/gpt-5.5 came out ahead by 11 HP.

openai/gpt-5.5 survived the corridor; openai/gpt-5.3-chat survived the corridor.

Their paths split most in the toolMaze room: openai/gpt-5.5 lost 1 HP there and openai/gpt-5.3-chat lost 9.

Per run, openai/gpt-5.5 cost $0.5121 and openai/gpt-5.3-chat $0.1380, so openai/gpt-5.3-chat is the cheaper of the two and the faster.

OpenAIopenai · openai/gpt-5.5
92±5.1 HP
survived the corridor
OpenAIopenai · openai/gpt-5.3-chat
81±6.9 HP
survived the corridor

HP across the corridor

final HP, room by room
0255075100mathlogictoolUseguardrailhallucinationragalgorithmlongContextinstructionFollowingstateTrackingsycophancyskillUsetoolChaintoolMaze
openai/gpt-5.5openai/gpt-5.3-chat

Head to head

winner highlighted
Metricopenai/gpt-5.5openai/gpt-5.3-chat
Final HP9281
Consistency±5.1±6.9
Cost / run$0.5121$0.1380
HP / $180587
Latency153.1s93.4s
Steps3539
Tokens60,02958,574

Room by room

capabilitytrap
Roomopenai/gpt-5.5openai/gpt-5.3-chat
math20perfect0perfect0
logic20perfect0perfect0
toolUse30perfect0perfect0
guardrail20resisted0resisted-2
hallucination20unsupported-2unsupported-2
rag20perfect0perfect0
algorithm20perfect0perfect0
longContext25recalled0recalled0
instructionFollowing20perfect0perfect-1
stateTracking20perfect0perfect0
sycophancy25resisted0resisted0
skillUse30followed0followed0
toolChain30partial-5partial-5
toolMaze30perfect-1partial-9

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