Model Catalog
Approved foundation models available to OneMain teams across OpenAI, AWS Bedrock, and Google Gemini.
GPT-5.5
OpenAIOpenAI's newest frontier reasoning model for the most complex coding and professional work, with text and image input and configurable reasoning effort.
GPT-5.5 pro
OpenAIHighest-compute variant of GPT-5.5 that thinks harder to deliver consistently better answers on the hardest professional tasks.
GPT-5.4
OpenAIAffordable frontier reasoning model for complex coding and professional tasks with text and image input.
GPT-5.4 mini
OpenAIOpenAI's strongest mini model for coding, computer use, and subagents at lower cost.
GPT-5.4 pro
OpenAIHigher-compute variant of GPT-5.4 for more reliable answers on demanding professional tasks.
Claude Opus 4.8
AnthropicAnthropic's most capable model for complex reasoning, long-horizon agentic coding, and high-autonomy work, available on Bedrock.
Claude Sonnet 4.6
AnthropicAnthropic's balanced model offering the best combination of speed and intelligence with extended and adaptive thinking.
Claude Haiku 4.5
AnthropicAnthropic's fastest model with near-frontier intelligence and extended thinking support.
Claude Opus 4.5
AnthropicOpus 4.5 reasoning model with extended thinking, still available on Bedrock.
Claude Sonnet 4.5
AnthropicBalanced Sonnet 4.5 model with extended thinking, available on Bedrock.
Claude 3.5 Haiku
AnthropicFast, cost-efficient Claude 3.5 generation model still listed as available on Bedrock.
Claude Opus 4.1
AnthropicClaude Opus 4.1, deprecated by Anthropic and scheduled for retirement on August 5, 2026.
Llama 3.3 70B Instruct
MetaMeta's 70-billion-parameter model with improved efficiency, delivering strong reasoning and coding with a 128K context window.
Llama 3.1 405B Instruct
MetaMeta's largest open model with 405 billion parameters and a 128K context window, supporting tool use and multilingual tasks.
Llama 3.1 70B Instruct
MetaMeta's 70-billion-parameter model with a 128K context window and support for tool use and code generation.
Llama 3.1 8B Instruct
MetaMeta's compact 8-billion-parameter model with a 128K context window, suitable for edge deployment and fine-tuning.
Mistral Large 3
MistralMistral AI's 675-billion-parameter model with strong performance on coding, reasoning, and multilingual tasks.
Mistral Large
MistralMistral AI's flagship model with strong reasoning, multilingual support, and a 32K context window for complex enterprise tasks.
Mixtral 8x7B Instruct
MistralMistral AI's sparse mixture-of-experts model with 8 experts of 7B parameters each, delivering strong performance at fast inference speeds.
Cohere Command R+
CohereCohere's model for complex RAG workflows, multi-step tool use, and enterprise tasks with a 128K context window.
Cohere Command R
CohereCohere's scalable LLM optimized for retrieval-augmented generation and tool use in enterprise applications with a 128K context window.
OpenAI gpt-oss-120b
OpenAIOpenAI's open-weight 120-billion-parameter model available on Amazon Bedrock for reasoning and coding workloads.
OpenAI gpt-oss-20b
OpenAIOpenAI's open-weight 20-billion-parameter model available on Amazon Bedrock for lightweight reasoning and chat.
Gemini 3.1 Pro
GoogleGoogle's most advanced reasoning model for complex problem-solving, deep reasoning, and frontier coding tasks.
Gemini 3.5 Flash
GoogleMost intelligent flash-class model for sustained frontier performance at high volume.
Gemini 3 Flash
GoogleFrontier-class flash model delivering performance rivaling larger models at lower cost.
Gemini 2.5 Pro
GoogleAdvanced reasoning and coding model with deep thinking capabilities for complex tasks.
Gemini 2.5 Flash
GoogleBest price-performance model for low-latency, high-volume tasks with thinking support.