GPT-4.1 Nano vs GPT-5 Pro
At a Glance
| Compare |  GPT-4.1 NanoOpenAI | GPT-5 ProOpenAI |
|---|---|---|
| Pricing and Limits | ||
| Input priceFrom · USD / 1M tokens | $0.050Openrouter ↗ · Sep 3, 2026 | $7.50Openrouter ↗ · Sep 3, 2026 |
| Output priceFrom · USD / 1M tokens | $0.20Openrouter ↗ · Sep 3, 2026 | $60.00Openrouter ↗ · Sep 3, 2026 |
| Context windowMaximum documented tokens | 1,048K | 400K |
| Model facts checked | Aug 29, 2026View model evidence → | Sep 3, 2026View model evidence → |
Token prices are the lowest available sourced USD rates; input and output may use different providers. Cost ranking estimates output spend on LiveBench, not a full request bill. Ranking methodology →
Available Benchmarks
Side-by-Side Facts
| Field | GPT-4.1 Nano | GPT-5 Pro |
|---|---|---|
| Developer | OpenAI | OpenAI |
| Family | Gpt 4 1 | Gpt 5 |
| Model | GPT-4.1 Nano | GPT-5 Pro |
| Version | GPT-4.1 Nano | GPT-5 Pro |
| Lifecycle | active | active |
| Released | Unknown | 2025-10-06 |
| Knowledge cutoff | 2024-06-01 | 2024-09-30 |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |
| Context window | 1,048K | 400K |
| Total parameters | Unknown | Unknown |
| Active parameters | Unknown | Unknown |
| License | Unknown | Unknown |
| Open weights | No | No |
| API available | Yes | Yes |
| Self-hostable | No | No |
| Provider access | Openai (Standard), Openrouter (Standard) | Openai (Standard), Openrouter (Standard) |
| Capabilities | chat, generation, tools | chat, generation, reasoning, structured_outputs, tools |
GPT-4.1 Nano Capabilities
GPT-5 Pro Capabilities
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Primary Evidence
Sources and Freshness
Questions
GPT-4.1 Nano vs GPT-5 Pro FAQs
Is GPT-4.1 Nano or GPT-5 Pro better for coding?+
This comparison does not currently contain a protocol-matched coding benchmark for both GPT-4.1 Nano and GPT-5 Pro, so Model Markets cannot name a coding leader from pricing, context size, or capability labels alone.
Which is cheaper, GPT-4.1 Nano or GPT-5 Pro?+
GPT-4.1 Nano is $0.050 and GPT-5 Pro is $7.50 per million tokens, so GPT-4.1 Nano is cheaper on this metric. GPT-4.1 Nano is $0.20 and GPT-5 Pro is $60.00 per million tokens, so GPT-4.1 Nano is cheaper on this metric.
Which has a larger context window, GPT-4.1 Nano or GPT-5 Pro?+
GPT-4.1 Nano has the larger sourced context window. GPT-4.1 Nano supports 1,048K and GPT-5 Pro supports 400K.
Which performs better in benchmarks, GPT-4.1 Nano or GPT-5 Pro?+
There is no overall benchmark winner: At least two independently verified, protocol-matched benchmarks are required for an overall winner.
Can GPT-4.1 Nano or GPT-5 Pro be self-hosted?+
Both models have the same recorded self-hosting status: unsupported. GPT-4.1 Nano is not marked open weight; GPT-5 Pro is not marked open weight.
Can GPT-4.1 Nano and GPT-5 Pro understand images?+
GPT-4.1 Nano is documented with image input; GPT-5 Pro is documented with image input. This reflects supported input modalities, not vision quality.
Which can generate longer answers, GPT-4.1 Nano or GPT-5 Pro?+
GPT-5 Pro has the larger sourced maximum output: GPT-4.1 Nano supports 33K and GPT-5 Pro supports 272K output tokens.
Do GPT-4.1 Nano and GPT-5 Pro support reasoning and tool use?+
GPT-4.1 Nano: tool calling and image input. GPT-5 Pro: reasoning, tool calling, and image input. Feature support does not establish relative quality.
Which is available from more inference providers, GPT-4.1 Nano or GPT-5 Pro?+
GPT-4.1 Nano has 2 sourced provider routes; GPT-5 Pro has 2, a tie.
Which offers better value, GPT-4.1 Nano or GPT-5 Pro?+
There is no universal value winner. Compare the input and output prices above with the matched benchmark result for your workload: cheaper tokens can be offset by different quality, token usage, latency, or provider availability.