GPT 5.4 Nano
OpenAI · text, image → text
GPT-5.4 nano is designed for tasks where speed and cost are most important, such as classification, data extraction, ranking, and sub-agent scenarios.
Input$0.20 /M
Output$1.25 /M
← ModelsGPT 5.4 Nano
Kimi K3
GPT 5.4 Nano vs Kimi K3
Output tokens cost $1.25 per million on GPT 5.4 Nano and $15.00 per million on Kimi K3. Input tokens cost $0.20 per million on GPT 5.4 Nano and $3.00 per million on Kimi K3. Cached input tokens are billed at $0.02 per million on GPT 5.4 Nano and $0.30 per million on Kimi K3. Context lengths are 400,000 tokens on GPT 5.4 Nano and 1,048,576 tokens on Kimi K3. Time to first token (TTFT) measured on AIHubMix is 1.4s on GPT 5.4 Nano and 0.9s on Kimi K3. Measured output throughput is 130.1 tok/s on GPT 5.4 Nano and 73.1 tok/s on Kimi K3. On the LMArena coding leaderboard GPT 5.4 Nano scores 1460 and Kimi K3 scores 1531.
GPT 5.4 NanoKimi K3+ Add model · 2/4
Kimi K3
Moonshot AI · text, image, video → text
Kimi K3 is Kimi’s flagship model for long-horizon coding and end-to-end knowledge work, with a 1M-token context window and industry-leading intelligence.
Input$3.00 /M
Output$15.00 /M
Pricing & Specifications
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
GPT 5.4 Nano
Kimi K3
Input /M
$0.20
$3.00
Output /M
$1.25
$15.00
Cache read /M
$0.02
$0.30
Context length
400,000
1,048,576
Max output
128,000
1,048,576
Time to First Token
1.4 s
0.9 s
Throughput
130.1 tok/s
73.1 tok/s
Modalities
textimage
textimagevideo
Supported Parameters
toolsfunction callingstructured outputsthinkingweb
thinkingfunction callingstructured outputs
API Formats
Released
March 17, 2026
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Promotional prices show the discounted rate; see each model page for promotion windows.
Activity Past 30 Days
Daily traffic served through AIHubMix — how demand for each model is trending.
gpt-5.4-nanokimi-k3
Tokens / day
-
Requests / day
-
Performance Past 3 Days
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
gpt-5.4-nanokimi-k3
Throughput (tok/s)
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TTFT (s)
-
Uptime (%)
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LMArena Benchmarks
LMArena ratings by capability (Bradley-Terry, commonly called Elo). Higher is better.
Text
gpt-5.4-nanokimi-k3
13201380144015001560
Overall
14021486
Coding
14601531
Math
14231423
Hard prompts
14211505
Instruction following
13881479
Multi-turn
14141499
Creative writing
13381470
Longer query
14041502
Chinese
14221527
English
14141491
Source: LMArena (arena.ai) leaderboard, imported by AIHubMix. Models without published ratings are omitted per chart.
Cost calculator
Estimate your monthly bill for the same workload on each model.
GPT 5.4 Nano
$30.75 /mo
Kimi K3
$405 /mo
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which is cheaper: GPT 5.4 Nano, Kimi K3?
GPT 5.4 Nano: $1.25/M output tokens; Kimi K3: $15.00/M. Use the cost calculator above to estimate your own workload.
How do their coding arena scores compare?
Kimi K3: 1531; GPT 5.4 Nano: 1460 (LMArena coding leaderboard).
Which responds faster?
Kimi K3: 0.9s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
How large is each context window?
GPT 5.4 Nano accepts 400,000 and Kimi K3 accepts 1,048,576 input tokens. Maximum output per request is 128,000 tokens on GPT 5.4 Nano and 1,048,576 tokens on Kimi K3.
Which one generates tokens faster?
GPT 5.4 Nano at 130.1 tok/s and Kimi K3 at 73.1 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
What inputs and capabilities does each model support?
GPT 5.4 Nano accepts text and image input and supports tool calling, function calling, structured outputs, thinking and web search; Kimi K3 accepts text, image and video input and supports thinking, function calling and structured outputs.
Can I call GPT 5.4 Nano and Kimi K3 with the same API key?
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
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