Evaluation
Compare
Pairwise comparison for preference-based training (DPO). Compare two responses and determine which is better.
POST
cURL
Authorizations
API key obtained from Labs Portal
Headers
Judge model ID. Must match judge_model when both are supplied.
Available options:
bedrock-llama-3.1-70b, bedrock-llama-3.1-8b, bedrock-llama-3-70b, bedrock-llama-3-8b, minimax-m2.5, mistral-7b, mistral-large-2402, mistral-small-2402, mixtral-8x7b, kimi-k3, nemotron-super-120b, bedrock-gpt-5.4, bedrock-gpt-5.5, bedrock-gpt-5.6-luna, bedrock-gpt-5.6-sol, bedrock-gpt-5.6-terra, bedrock-gpt-6-astra, bedrock-gpt-6-luna, bedrock-gpt-6-sol, bedrock-gpt-6.1-sol, palmyra-vision-7b, bedrock-grok-4.6, bedrock-grok-4.7, glm-5, glm-5.3, claude-haiku-5-5, claude-sonnet-5, claude-sonnet-5-5, claude-opus-4-7, claude-opus-4-8, claude-opus-5, claude-opus-5-5, claude-fable-5, claude-fable-5-1, claude-4-5-haiku, claude-sonnet-4-6, claude-opus-4-5, claude-opus-4-6, glm-4.7-flash, glm-4.7, nova-micro, nova-lite, nova-pro, nova-2-lite, deepseek-r1, deepseek-v3, deepseek-v3.2, kimi-k2-thinking, kimi-k2.5, minimax-m2, minimax-m2.1, bedrock-qwen3-32b, bedrock-qwen3-235b, bedrock-qwen3-coder-30b, bedrock-qwen3-coder-480b, bedrock-qwen3-coder-next, bedrock-qwen3-next-80b, bedrock-qwen3-vl-235b, mistral-large-3, devstral-123b, magistral-small, pixtral-large, ministral-14b, ministral-8b, ministral-3b, bedrock-llama-4-maverick, bedrock-llama-4-scout, bedrock-llama-3.3-70b, gemma-3-27b, gemma-3-12b, gemma-3-4b, nemotron-nano-30b, nemotron-nano-12b, nemotron-nano-9b, bedrock-gpt-oss-120b, bedrock-gpt-oss-20b, palmyra-x5, palmyra-x4 Body
application/json
The collection slug containing the scenario
The scenario slug to compare responses for
First response to compare
Second response to compare
Available options:
bedrock-llama-3.1-70b, bedrock-llama-3.1-8b, bedrock-llama-3-70b, bedrock-llama-3-8b, minimax-m2.5, mistral-7b, mistral-large-2402, mistral-small-2402, mixtral-8x7b, kimi-k3, nemotron-super-120b, bedrock-gpt-5.4, bedrock-gpt-5.5, bedrock-gpt-5.6-luna, bedrock-gpt-5.6-sol, bedrock-gpt-5.6-terra, bedrock-gpt-6-astra, bedrock-gpt-6-luna, bedrock-gpt-6-sol, bedrock-gpt-6.1-sol, palmyra-vision-7b, bedrock-grok-4.6, bedrock-grok-4.7, glm-5, glm-5.3, claude-haiku-5-5, claude-sonnet-5, claude-sonnet-5-5, claude-opus-4-7, claude-opus-4-8, claude-opus-5, claude-opus-5-5, claude-fable-5, claude-fable-5-1, claude-4-5-haiku, claude-sonnet-4-6, claude-opus-4-5, claude-opus-4-6, glm-4.7-flash, glm-4.7, nova-micro, nova-lite, nova-pro, nova-2-lite, deepseek-r1, deepseek-v3, deepseek-v3.2, kimi-k2-thinking, kimi-k2.5, minimax-m2, minimax-m2.1, bedrock-qwen3-32b, bedrock-qwen3-235b, bedrock-qwen3-coder-30b, bedrock-qwen3-coder-480b, bedrock-qwen3-coder-next, bedrock-qwen3-next-80b, bedrock-qwen3-vl-235b, mistral-large-3, devstral-123b, magistral-small, pixtral-large, ministral-14b, ministral-8b, ministral-3b, bedrock-llama-4-maverick, bedrock-llama-4-scout, bedrock-llama-3.3-70b, gemma-3-27b, gemma-3-12b, gemma-3-4b, nemotron-nano-30b, nemotron-nano-12b, nemotron-nano-9b, bedrock-gpt-oss-120b, bedrock-gpt-oss-20b, palmyra-x5, palmyra-x4 Response
Success
Which response won: a, b, or tie
Available options:
a, b, tie Reward score for response_a from 0 to 1
Required range:
0 <= x <= 1Reward score for response_b from 0 to 1
Required range:
0 <= x <= 1Absolute difference between reward_a and reward_b
Version of the scoring algorithm used
Available options:
bedrock-llama-3.1-70b, bedrock-llama-3.1-8b, bedrock-llama-3-70b, bedrock-llama-3-8b, minimax-m2.5, mistral-7b, mistral-large-2402, mistral-small-2402, mixtral-8x7b, kimi-k3, nemotron-super-120b, bedrock-gpt-5.4, bedrock-gpt-5.5, bedrock-gpt-5.6-luna, bedrock-gpt-5.6-sol, bedrock-gpt-5.6-terra, bedrock-gpt-6-astra, bedrock-gpt-6-luna, bedrock-gpt-6-sol, bedrock-gpt-6.1-sol, palmyra-vision-7b, bedrock-grok-4.6, bedrock-grok-4.7, glm-5, glm-5.3, claude-haiku-5-5, claude-sonnet-5, claude-sonnet-5-5, claude-opus-4-7, claude-opus-4-8, claude-opus-5, claude-opus-5-5, claude-fable-5, claude-fable-5-1, claude-4-5-haiku, claude-sonnet-4-6, claude-opus-4-5, claude-opus-4-6, glm-4.7-flash, glm-4.7, nova-micro, nova-lite, nova-pro, nova-2-lite, deepseek-r1, deepseek-v3, deepseek-v3.2, kimi-k2-thinking, kimi-k2.5, minimax-m2, minimax-m2.1, bedrock-qwen3-32b, bedrock-qwen3-235b, bedrock-qwen3-coder-30b, bedrock-qwen3-coder-480b, bedrock-qwen3-coder-next, bedrock-qwen3-next-80b, bedrock-qwen3-vl-235b, mistral-large-3, devstral-123b, magistral-small, pixtral-large, ministral-14b, ministral-8b, ministral-3b, bedrock-llama-4-maverick, bedrock-llama-4-scout, bedrock-llama-3.3-70b, gemma-3-27b, gemma-3-12b, gemma-3-4b, nemotron-nano-30b, nemotron-nano-12b, nemotron-nano-9b, bedrock-gpt-oss-120b, bedrock-gpt-oss-20b, palmyra-x5, palmyra-x4