Can I run gpt-oss-120b or Phi 2 3b cheaper on another provider?

Some models are available on inference providers like Together AI, Groq, and Fireworks AI at lower prices. Check each model's pricing page for the full provider comparison.

What is the context window difference between gpt-oss-120b and Phi 2 3b?

gpt-oss-120b has a larger context window at 131K tokens vs 2K. This matters for long documents, large codebases, and extended conversation histories.

Compare

gpt-oss-120b vs Phi 2 3b

Pricing is only the shared seller matrix below. Best rates and catalog map are separate sections, so no chart is embedded in pricing. Open the calculator for the same workload on each side.

OpenAI

Model

gpt-oss-120b

Tool calling

Best $0.050 in · $0.250 out

Context window 131K

Pricing

Microsoft

Model

Phi 2 3b

Best $0.100 in · $0.100 out

Context window 2K

Pricing

gpt-oss-120b is 50% cheaper on input. Phi 2 3b is 60% cheaper on output. The best choice depends on your input/output ratio.

Estimate cost

Pricing matrix

Shared sellers only. Each row is a host that lists both models. Dollar amounts are per 1M tokens. Lowest in each pair of columns is emphasized.

Provider	gpt-oss-120b in	gpt-oss-120b out	Phi 2 3b in	Phi 2 3b out
Azure	$0.150	$0.600	N/A	N/A
Baseten	$0.100	$0.500	N/A	N/A
Cerebras	$0.350	$0.750	N/A	N/A
DeepInfra	$0.050	$0.450	N/A	N/A
Fireworks AI	$0.150	$0.600	$0.100	$0.100
Groq	$0.150	$0.600	N/A	N/A
Ibm Watsonx	$0.150	$0.600	N/A	N/A
Novita	$0.050	$0.250	N/A	N/A
Openrouter	$0.180	$0.800	N/A	N/A
Ovhcloud	$0.080	$0.400	N/A	N/A
Replicate	$0.180	$0.720	N/A	N/A
Sambanova	$3.00	$4.50	N/A	N/A
Together AI	$0.150	$0.600	N/A	N/A
Wandb	$15000.00	$60000.00	N/A	N/A

Best listed rates (this pair)

Same "best row in current pricing" logic as model pages: a compact view of the lowest input and output we show for each side. This is not the seller matrix.

Catalog map · OpenAI · Microsoft

Each chart uses real catalog rows that include both list input and list output ($/1M). Larger green dots are the models on this comparison page; accent dots are other active models from that provider.

OpenAI · input vs output

Scatter chart: X = input $/M, Y = output $/M. This page's models are labeled on the green dots; hover others for detail.

ListedoutputUSD/1M

One dot per catalog row that has both list prices. Green dots are labeled with the models on this page; hover any dot for name and prices. Upper-right means higher cost on both axes ($/1M).

Microsoft · input vs output

ListedoutputUSD/1M

One dot per catalog row that has both list prices. Green dots are labeled with the models on this page; hover any dot for name and prices. Upper-right means higher cost on both axes ($/1M).

Specifications

Each column header is the full model name. Tint marks the favorable value where we compute a winner.

Spec

gpt-oss-120b

Phi 2 3b

Context window: 131,072 tokens; 2,048 tokens
Max output tokens: 131,072 tokens; 2,048 tokens
Vision: No; No
Function calling: Yes; No
Streaming: No; No
Release date: Aug 2025; N/A

Cost calculator

Same requests, input tokens, and output tokens for both columns. Pick the provider row that matches how you buy.

gpt-oss-120b

Phi 2 3b

Requests / day

Input tokens

Output tokens

gpt-oss-120b

Monthly

$174

Annual

$2.1K

Phi 2 3b

Monthly

$45

Annual

$548

Save $129/month with Phi 2 3b

When to pick which

Short takeaways: no cards, just the points. Validate with your own workloads.

Long-context tasks
Use gpt-oss-120b. Its 131K context window handles large codebases and documents better than 2K.
High-volume text generation
Use Phi 2 3b. Output tokens are 60% cheaper, which compounds significantly at scale.
Long output (reports, code files)
Use gpt-oss-120b. Its 131K max output limit reduces the need to split requests.

Frequently asked questions

gpt-oss-120b is cheaper on input tokens, while Phi 2 3b is cheaper on output. The best choice depends on your input/output ratio.

More comparisons

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