OpenAI · LLM API pricing

gpt-oss-120b API pricing: cheapest provider

18 providers sell gpt-oss-120b. W&B Inference (CoreWeave) is cheapest; the most expensive charges 6.9× as much for the same model.

Cheapest$0.065per 1M · W&B Inference (CoreWeave)
Input · output$0.03 / $0.17per 1M tokens
Price gap6.9×across 18 providers
Accuracy75.8%GPQA · high reasoning
Context131Kmax tokens

$0.065 W&B Inference (CoreWeave)6.9× spread$0.45 Cloudflare Workers AI

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Standard list prices in USD from each provider's pricing page · last price change Oct 17, 2026 · How we collect and rank prices

Ranked for your volume

gpt-oss-120b monthly cost by provider

Change the monthly tokens and the ranking updates instantly, using each provider's standard list price.

Input tokens per month (millions)Prompts, context and documents you send.Output tokens per month (millions)Tokens the model generates.

More requirements: caching, context, features, provider

Cached share of input (%)0 = no caching. Only documented cache-read rates qualify.Required context per request (tokens)0 = any. Providers without a sufficient known limit are excluded.Required featureProvider requirement

Provider	Estimated / month	Input / 1M	Output / 1M	Cached input / 1M	Context
1 W&B Inference (CoreWeave)Inference provider - lowest for your volumePricing page	$0.64	$0.03	$0.17	Not listed	131,000
2 DeepInfraInference providerPricing page	$0.71	$0.037	$0.17	Not listed	131,072
3 Novita AIInference providerPricing page	$1.00	$0.05	$0.25	Not listed	131,072
4 SiliconFlowInference providerPricing page	$1.40	$0.05	$0.45	Not listed	131,000
5 OVHcloud AI EndpointsCloud platformBilled in EUR: €0.08 input, €0.40 output per 1M tokens. USD at the ECB rate of Oct 30, 2026 (1.1172).Pricing page	$1.79	$0.0894	$0.4469	Not listed	131,000
6 BasetenInference providerPricing page	$2.00	$0.10	$0.50	$0.10	128,072
7 Amazon BedrockCloud platformPricing page	$2.70	$0.15	$0.60	Not listed	131,072
8 Fireworks AIInference providerPricing page	$2.70	$0.15	$0.60	$0.015	131,072
9 Microsoft Azure AI FoundryCloud platformPricing page	$2.70	$0.15	$0.60	Not listed	131,072
10 Nebius Token FactoryCloud platformPricing page	$2.70	$0.15	$0.60	Not listed	131,072

Order depends on listed price for your volume only. No provider pays for its position.

Input volume includes the cached share, not an additional token volume. This is a list-price estimate, not a quote: cache-write charges, cache eligibility/TTL, batch discounts, long-context surcharges, regional pricing and taxes are excluded. Check the provider's terms for your workload before switching.

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| gpt-oss-120b provider | Input / 1M tokens | Output / 1M tokens | 10M in + 2M out per month |
|---|---:|---:|---:|
| W&B Inference (CoreWeave) | $0.03 | $0.17 | $0.64 |
| DeepInfra | $0.037 | $0.17 | $0.71 |
| Novita AI | $0.05 | $0.25 | $1.00 |
| SiliconFlow | $0.05 | $0.45 | $1.40 |
| OVHcloud AI Endpoints | $0.0894 | $0.4469 | $1.79 |
| Baseten | $0.10 | $0.50 | $2.00 |
| Amazon Bedrock | $0.15 | $0.60 | $2.70 |
| Fireworks AI | $0.15 | $0.60 | $2.70 |
| Microsoft Azure AI Foundry | $0.15 | $0.60 | $2.70 |
| Nebius Token Factory | $0.15 | $0.60 | $2.70 |

Standard list prices as of Oct 31, 2026 (cheapest 10 of 18 providers). Source: [AISelect.online](https://aiselect.online/models/gpt-oss-120b)

Accuracy: GPQA Diamond (graduate-level science questions) measured by Epoch AI (CC BY 4.0) on openai/gpt-oss-120b_high, run Dec 11, 2025. The model is the same at every provider, though quantized deployments can score lower.

Price history

The cheapest price has not changed since tracking started on Sep 28, 2026: $0.065 per 1M tokens at W&B Inference (CoreWeave). All price changes

Switch to the cheapest provider

Switch to W&B Inference (CoreWeave)

Already using the OpenAI SDK? Change the base URL, key and model name:

from openai import OpenAI
import os

client = OpenAI(
    base_url="https://api.inference.wandb.ai/v1",
    api_key=os.environ["WANDB_API_KEY"],
)
response = client.chat.completions.create(
    model="openai/gpt-oss-120b",
    messages=[{"role": "user", "content": "Hello"}],
)

Base URL from W&B Inference (CoreWeave)'s API docs, model name from the open pricing datasets. Check the model page in W&B Inference (CoreWeave)'s docs before you switch production traffic.

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Before you pick a provider

Context windows differ by provider, from 128K to 131K tokens. A cheaper host may not accept your longest prompts.

2 of 18 providers list a cached-input price. Repeated system prompts or documents can cost much less there than the standard input rate shown above.

Our take: Cheapest gpt-oss-120b API: Hosts Differ by 7.8x for the Same Model

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