gpt-5.1

openai/gpt-5.1

Context

400K

Input

text, image

Output

text

Tool calling

Supported

About this model

OpenAI's GPT-5.1 model, released November 13, 2025. Features a strong multimodal and reasoning capabilities, and is optimized for complex agentic workflows. It introduced significant improvements in coding, reasoning, and tool use over previous generations.

Compare Text Models

Input modalities

text

Accepted as model input

image

Accepted as model input

Providers

Available routing options for this model through OneInfer.

OpenAI

Available

Input tokens

$1.250 / 1M tokens

Output tokens

$10.000 / 1M tokens

Routing

OneInfer optimized

Pricing

Current OneInfer pricing for this model.

Usage	Price
Input tokens	$1.250 / 1M tokens
Output tokens	$10.000 / 1M tokens
Cached input tokens	$0.125 / 1M tokens

Performance

Published evaluation results associated with this model.

coding

live_code_bench86.8

aa_coding_index49.4

terminal_bench_hard45.5

aa_sci_code43.3

benchlm_categories

multimodal_score91.8

knowledge_score76.9

agentic_score70.6

reasoning_score65.4

API example

Refer Documentation

curl https://api.oneinfer.ai/v1/ula/chat/completions \
  -H "Authorization: Bearer $JWT_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5.1",
    "messages": [
      { "role": "user", "content": "Hello!" }
    ]
  }'