Large Language ModelText GenerationGPT-4.1 Family

ChatGPT API

The ChatGPT API is OpenAI's hosted interface to its GPT-4.1-class language models, exposed as a general-purpose text-in/text-out service. It supports natural language understanding, generation, and tool-using workflows for chatbots, agents, and automation. The API is optimized for reliability, safety, and integration into production applications.

by OpenAIReleased 2024-07-18Proprietary

Context Window

128K

API Access

Available

Key Capabilities

+Natural language understanding and generation
+Multi-turn conversational context handling
+Tool and function calling for agents and automation
+Code generation and debugging assistance
+Summarization, rewriting, and data extraction
+Instruction following and workflow orchestration

Limitations

-Proprietary model with no access to weights or training data
-May produce incorrect or hallucinated information
-Limited knowledge of events after its training cutoff
-No direct fine-tuning of base weights (uses system/instructions instead)
-Subject to rate limits and usage-based pricing

Benchmark Performance

reasoning

Massive Multitask Language Understanding

70.0%

reasoning

Graduate-Level Google-Proof Q&A

28.1%

coding

HumanEval

48.1%

math

Grade School Math 8K

57.1%

math

MATH

34.1%

conversation

Chatbot Arena Elo

1105.0Elo

Alternatives & Comparisons

Claude 3 HaikuLLM API

Anthropic's fast, cost-efficient model for production workloads

Strengths

+ Strong reasoning for its price tier
+ Good safety and refusal behavior

Weaknesses

- Proprietary and closed weights
- Different API semantics vs OpenAI

Gemini 1.5 FlashLLM API

Google's lightweight Gemini model optimized for speed and low cost

Strengths

+ Tight integration with Google Cloud and Google ecosystem
+ Very low latency and competitive pricing

Weaknesses

- Proprietary and closed weights
- API and quota model differ from OpenAI

Sources

platform.openai.com openai.com openai.com www.vellum.ai o-mega.ai www.confident-ai.com