Models / GPT 4.1ID: openai/gpt-4.1
chat model by OpenAI

GPT 4.1

Multimodal language model featuring a 1,047,576-token context window and a 32,768-token output limit. It supports text and image inputs with a June 2024 knowledge cutoff.

Certified & verified by nRouter· facts checked 2026-09-14 against 2 official sources

PlaygroundQuick Start
Context window1.05M
Max output33K
Maker

OpenAI

Served On

OpenAI

Specifications

Context window, ranked against other chat models

Proportional scale: 0 to 1.05M tokens. Not ranked, no published context window: glm-5.3-prime, qwen3-235b-a22b-2507, qwen3.7-max-2026-05-17, claude-opus-5-5.

Context window

1.0M

Source: platform.openai.com
Max output

33K

Source: platform.openai.com
Modality

chat

Vision
Function calling
System prompt

Benchmarks

not listed under this exact id on arena.ai text leaderboard (2026-09-11); listed variant: gpt-4.1-2025-04-14 rank 129

Pricing

Rates are read live

Pricing for gpt-4.1 is fetched from the live catalogue on load, so it is never served from a cache that could outlive a repricing.

Availability

Not enough data yet

We have not collected enough health probes for this model to publish an uptime or latency figure. A percentage from a handful of samples is fabricated precision, so none is shown until the sample count supports one.

How GPT 4.1 is billed

Billed at the provider's list price, with no per-token markup.

Exact list price
Tokens settle at the published rate of the model that served your call.
Cache discounts passed through
Provider prompt-caching discounts reach your balance with no added fee.
Cost on every response
Each response carries the x-nr-request-cost header, so you can reconcile spend per request.

More from OpenAI

gpt-5.6-lunagpt-5.5-progpt-4o-minigpt-5.4

Start building with gpt-4.1

One API key, three steps. Choose your tool to begin.

  1. Get a key

    Create API key

  2. Set your API key

    export NROUTER_API_KEY="<YOUR_API_KEY>"

  3. Configure Claude Code

    Choose a tool, then copy its setup from the panel.

npm install -g @anthropic-ai/claude-code
Claude Code · openai/gpt-4.1
# Point Claude Code to nRouter gateway
export ANTHROPIC_BASE_URL="https://api.nrouter.ai"
export ANTHROPIC_API_KEY="$NROUTER_API_KEY"

# Launch with openai/gpt-4.1
claude --model openai/gpt-4.1