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Qwen3 4B

Pricing & Specs API
Free REST API for prices, specs and benchmarks
Qwen3 4B is Alibaba's language model with a 128K context window and up to 20K output tokens, available from 3 providers, starting at $0.03 / 1M input and $0.03 / 1M output. A compact 4B-parameter dense LLM from the Qwen3 series supporting hybrid thinking and non-thinking modes for efficient on-device or low-latency deployment.
Specifications
Canonical IDalibaba-qwen3-4b
TypeLanguage
StatusActive
CreatorAlibabaAlibaba
Providers
Context Window128K tokens
Max Output20K tokens
Input ModalitiesText
Output ModalitiesText
Reasoning Effortsdefault
Parameters4B

Capabilities

Input1/5
Text✓
Image·
Audio·
Video·
PDF·
Output1/5
Text✓
Image·
Audio·
Video·
Embedding·
Capabilities2/13
Reasoning✓
Adaptive Reasoning·
Function Calling✓
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

US Dollar ($)
Per 1M tokens
ProviderStandard
Input
$ / 1M
Output
$ / 1M
Fireworks AI logo
Fireworks AI
fireworks_ai/accounts/fireworks/models/qwen3-4b
$0.2$0.2
Nebius logo
Nebius
nebius/Qwen/Qwen3-4B
$0.08$0.24
Novita logo
Novita
novita/qwen/qwen3-4b-fp8
$0.03$0.03

Cost Calculator

US Dollar ($)
Preset:

Cheapest Instances to Run It

Cloud GPU instances that can host Qwen3 4B, ranked by cheapest on-demand price. The model needs about 10 GB of GPU memory at FP16 precision (estimated from its parameter count), so treat the fit as guidance rather than a guarantee.

All clouds
FP16 (full precision)
US Dollar ($)
Instance
Cloud
GPU
VRAM
Price
Cheapest region
Standard_NV4as_v4AzureAMD Radeon Instinct MI2516 GB$0.233/hrwestus2
g5g.xlargeAWST4g16 GB$0.420/hrus-east-1
Standard_NV8as_v4AzureAMD Radeon Instinct MI2516 GB$0.466/hrwestus2
7 more instances can run Qwen3 4B
Unlock the full ranked list and FP8 / INT4 quantization with a CloudPrice subscription.

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Voyage 4 Nano————Available
Qwen3 Embedding 0.6B33K$0.010—Available
Qwen3 Embedding 4B41K$0.020—Available
Qwen3 Embedding 8B41K$0.020—Available
Qwen3 14B132K$0.060$0.200Available
Qwen3 32B131K$0.050$0.100Deprecated
Qwen3 8B131K$0.035$0.138Available
Qwen3 4B—128K$0.030$0.030Current
Qwen3 4B Instruct—262K$0.010$0.030Available
KwaiPilot KAT 32B Dev—131K$0.900$0.900Available
Qwen3 0.6B—41K$0.100$0.100Available

Model IDs

accounts/fireworks/models/qwen3-4b
alibaba-qwen3-4b
fireworks_ai/accounts/fireworks/models/qwen3-4b
huggingface-reasoning-qwen3-4b
nebius/Qwen/Qwen3-4B
novita/qwen/qwen3-4b-fp8
qwen/qwen3-4b-fp8
qwen3-4b