Models / GPT 5 Nano 2025 08 07ID: openai/gpt-5-nano-2025-08-07
reasoning model by OpenAI

GPT 5 Nano 2025 08 07

Snapshot of GPT-5 Nano offering 400K context input support and fast inference for cost-sensitive automation pipelines.

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

PlaygroundQuick Start
Context window400K
Max output128K
Maker

OpenAI

Served On

OpenAI

This model is deprecated

GPT 5 Nano 2025 08 07 has been deprecated. It is still served on nRouter and can still be called.

Caller Notice: To help identify integrations still relying on this model, all API responses now include x-nr-model-deprecated: true and Warning: 299 - "Model deprecated" headers.

Specifications

Context window, ranked against other reasoning models

Proportional scale: 0 to 1.05M tokens. Not ranked, no published context window: gpt-5.5-pro, gpt-5.6-cyber.

Context window

400.0K

Source: platform.openai.com
Max output

128K

Source: platform.openai.com
Modality

reasoning

Vision
Function calling
System prompt

Benchmarks

not listed on arena.ai text leaderboard as of 2026-09-11

Pricing

Rates are read live

Pricing for gpt-5-nano-2025-08-07 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 5 Nano 2025 08 07 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-5-nano-2025-08-07

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-5-nano-2025-08-07
# 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-5-nano-2025-08-07
claude --model openai/gpt-5-nano-2025-08-07