Optimized for speed and ideal for applications requiring low latency. The fastest and most efficient GPT-5 variant.
Added Aug 7, 2025
Context Window
400.0K
Max Output
128.0K
Avg output tokens (7d)
319 tokens
Input Price (Auto)
$0.050/1M
Output Price (Auto)
$0.40/1M
Cache Read (Auto)
$0.0050/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
13.0
Agentic work
T²-Bench Telecom (legacy)
Legacy fallback · Conversational AI agents in dual-control scenarios
36.5%
Better than 44% of models compared
Document reasoning
AA-LCR v1.1
Long context reasoning with updated grading
45.0%
Better than 40% of models compared
Reasoning
HLE
Humanity's Last Exam
9.5%
Better than 49% of models compared
IFBench
Instruction-following benchmark
67.6%
Better than 81% of models compared
Coding
Terminal-Bench Hard (legacy)
Legacy fallback · Agentic coding and terminal use
12.1%
Better than 48% of models compared
LiveCodeBench
Contamination-free coding benchmark
78.9%
Better than 91% of models compared
Math
AIME 2025
American Invitational Mathematics Examination 2025
83.7%
Better than 80% of models compared
Knowledge
MMLU-Pro
Professional and academic subject knowledge
78.0%
Better than 59% of models compared
Legacy benchmarks
GPQA Diamond (legacy)
Graduate-level scientific reasoning
67.6%
Better than 44% of models compared
AA-LCR (unversioned / legacy)
Long context reasoning evaluation
45.0%
Better than 40% of models compared
Last updated Oct 1, 2026
Artificial AnalysisProviders
Auto routing is available for this model. Explicit provider selection is not available.
Loading provider options…
Related text models
Compare GPT 5 Nano with similar models from the same provider or model family.
GPT 5.4 Nano
openai/gpt-5.4-nanoGPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks.
GPT 4.1 Nano
openai/gpt-4.1-nanoCheapest model in the GPT-4.1 series. Huge context window with fast throughput and low latency.
GPT 6 Sol
openai/gpt-6-solGPT-6 Sol is the cost-efficient high-end model in OpenAI's GPT-6 series, positioned below the flagship GPT-6 Astra and above the fast GPT-6 Luna tier. It is suited for demanding professional work, reasoning, coding, and agentic workflows.
GPT 6 Sol Pro
openai/gpt-6-sol-proGPT-6 Sol Pro uses the same underlying model as GPT-6 Sol with Pro reasoning mode enabled for higher-quality responses on complex tasks.
GPT Astra Latest
openai/gpt-astra-latestCompatibility alias that routes to GPT 6 Astra, the latest supported GPT Astra model.
GPT Luna Latest
openai/gpt-luna-latestCompatibility alias that routes to GPT 5.6 Luna, the latest supported GPT Luna model.