GPT-OSS-120B

OpenAI's first open-weight model, released August 2025: a 117B-parameter MoE with 5.1B active that fits on a single 80 GB GPU, under Apache 2.0.

Params: 117B, 5.1B active
Context: 131K tokens
Max output: 131K
Cutoff: Jun 2024
Released: Aug 2025
License: Apache 2.0

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Hosted API price

Cheapest via Geodd · per 1M tokens

USD

Input: $0.039 /1M
Output: $0.182 /1M
Hosted by: 9 providers

Hosted API pricing

How we price

Order

Providers are listed cheapest input rate first, then by output rate, a tie going to the creator's own listing. A provider that lists the model without a published rate sits at the end.

Prices

Base-tier, on-demand rates in USD per 1M tokens, converted at ECB reference rates where a provider publishes in another currency. Cached-input and batch rates show only where a provider publishes them. "Cheapest" marks the one provider with the lowest input and output pair; a tie wears no badge.

Cost

Input rate times the input tokens plus output rate times the output tokens, at the monthly volume set above the table. Cached-input, batch, long-context and reasoning-token billing are not modelled.

Transparency and funding

Affiliates: Affiliate links are marked. We may earn a commission if you click them, but commissions never affect the order.

Every provider serving GPT-OSS-120B, cheapest input first. Set your monthly volume to see what each would bill.

Input M Output M

Every provider serving GPT-OSS-120B, with its price per 1M input and output tokens and what the volume above would cost
Provider	Input /1M	Output /1M	Cost at 10M in + 2M out	Link
Geodd Cheapest	$0.039	$0.182	$0.75	Visit website
Novita	$0.05	$0.25	$1.00	Visit website
DigitalOcean	$0.06	$0.39	$1.38	Visit website
Hyperstack	$0.10	$0.40	$1.80	Visit website
Lyceum	$0.15	$0.60	$2.70	Visit website
Azure	$0.15	$0.60	$2.70	Visit website
Together AI	$0.15	$0.60	$2.70	Visit website
Replicate	$0.18	$0.72	$3.24	Visit website
Cloudflare	$0.35	$0.75	$5.00	Visit website

Heads up: Base-tier, on-demand rates per 1M tokens; cached, batch and long-context tiers excluded. A provider may serve a shorter context or a quantized build than the creator's release. Verify before provisioning. More on how we price.

Estimated cost to self-host

GPT-OSS-120B needs about 68 GB of GPU memory at 4-bit with 32K context. The cheapest rental that fits is 8× RTX 3060 at about $403 a month.

That costs the same as roughly 6B tokens a month on Geodd's API. Self-hosting is more expensive below that volume.

Single node ≤ 8

What it costs to self-host GPT-OSS-120B at each precision: the memory it needs, the cheapest rental that holds it, that rental's month and the API volume it pays off at
Precision	Memory	Cheapest fit (32K context)(Full 131K context)	Cost /mo	Break-even vs API
4-bit INT4 / FP4	68 GB71 GB	8× RTX 3060	$403$403	6B tokens /mo6B tokens /mo
8-bit FP8 / INT8	120 GB124 GB	8× RTX 3090	$1,152$1,152	18B tokens /mo18B tokens /mo
16-bit FP16 / BF16	237 GB241 GB	8× RTX A6000	$3,226$3,226	51B tokens /mo51B tokens /mo

Estimates based on median on-demand rates for Nvidia GPUs. Memory is weights plus KV cache for one request, using FP8 KV cache where supported and FP16/BF16 otherwise. Break-even assumes a 5:1 input-to-output ratio. No guarantee of runtime support, usable performance, or that a matching quantized build exists. Pricing methodology.

Similarly priced models

The models nearest GPT-OSS-120B by blended rate, each at its own cheapest provider.

Models priced nearest GPT-OSS-120B per 1M tokens, each at its cheapest provider
Model	Blended /1M	Input /1M	Output /1M	Context	Cutoff	vs GPT-OSS-120B
Qwen3.7-Flash Alibaba Cloud	$0.0467	$0.03	$0.13	1M		−26%
GPT-OSS-20B OpenAI	$0.0483	$0.03	$0.14	131K	Jun 2024	−23%
Llama 3.2 1B Meta	$0.056	$0.027	$0.201	128K	Dec 2023	−11%
Command R7B Cohere	$0.0583	$0.04	$0.15	128K		−7%
Gemma 3 12B Instruct Google Cloud	$0.0583	$0.05	$0.10	128K	Aug 2024	−7%
GPT-OSS-120B This model OpenAI	$0.0628	$0.039	$0.182	131K	Jun 2024
Nemotron 3 Nano 30B A3B Nvidia	$0.075	$0.05	$0.20	262K	Jun 2025	+19%
Llama 3 8B Meta	$0.0833	$0.05	$0.25	8K	Mar 2023	+33%
Qwen3-Coder-30B-A3B Alibaba Cloud	$0.0917	$0.06	$0.25	262K		+46%
Llama 3.2 3B Meta	$0.0983	$0.051	$0.335	128K	Dec 2023	+56%
Qwen3-30B-A3B FP8 Alibaba Cloud	$0.0983	$0.051	$0.335	33K		+56%

USD per 1M tokens at each model's cheapest listed provider. Blended is the cost of 10M input plus 2M output tokens, spread over the 12M.

Thunder Compute

RTX A6000 from $0.35, A100 from $1.09, per GPU per hour

Billed per minute, no commitment, no minimums

One click into VS Code or Cursor, no SSH setup

See live pricing

Capabilities

What GPT-OSS-120B accepts and can do, as published by OpenAI.

Text Accepts and generates natural-language text.
Reasoning Thinks before it answers, always on or as a switchable mode.
Function calling Connect to external tools, APIs, and systems.
Structured output Return responses in structured formats like JSON.

Common questions

What is GPT-OSS-120B good for?

Self-hosted or third-party-hosted text work under Apache 2.0. A mixture of experts activating 5.1B parameters per token, servable on a single high-memory GPU.

When is GPT-OSS-120B not a good fit?

Image input, since it is text only. Its knowledge is older than the rest of OpenAI's lineup, and memory follows the full 117B parameters, not the 5.1B active.

What is the cheapest way to run GPT-OSS-120B?

Hosted, unless you push serious volume. Geodd charges $0.039 in / $0.182 out per 1M tokens. The cheapest rental that fits is 8x RTX 3060 at $403 a month, which costs the same as about 6B tokens a month on that API.

Can I self-host GPT-OSS-120B?

Yes. The weights are Apache 2.0 licensed. At 4-bit it needs about 68 GB of GPU memory, which starts at roughly $403 a month on the cheapest rental that fits.