Compare

Claude Sonnet 4.6 vs gpt-oss-120b

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.

Anthropic

Model

Claude Sonnet 4.6

Image inputTool calling

Best $2.80 in · $8.50 out

Context window 200K

Pricing
OpenAI

Model

gpt-oss-120b

Tool calling

Best $0.039 in · $0.180 out

Context window 131K

Pricing

gpt-oss-120b is cheaper across the board — 98% cheaper on input and 98% cheaper on output.

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.

ProviderClaude Sonnet 4.6 inClaude Sonnet 4.6 outgpt-oss-120b ingpt-oss-120b out
Anthropic$3.00$15.00N/AN/A
Aws Bedrock$3.00$15.00N/AN/A
Azure$3.00$15.00$0.150$0.600
BasetenN/AN/A$0.100$0.500
CerebrasN/AN/A$0.350$0.750
DeepInfraN/AN/A$0.050$0.450
Fireworks AI$2.90$9.00$0.150$0.600
Google Vertex$3.00$15.00N/AN/A
GroqN/AN/A$0.150$0.600
Ibm WatsonxN/AN/A$0.150$0.600
NovitaN/AN/A$0.050$0.250
Openrouter$3.00$15.00$0.180$0.800
OvhcloudN/AN/A$0.080$0.400
ReplicateN/AN/A$0.180$0.720
SambanovaN/AN/A$3.00$4.50
Together AI$2.80$8.50$0.150$0.600
WandbN/AN/A$15000.00$60000.00

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 · Anthropic · OpenAI

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.

Anthropic · 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).

OpenAI · 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
Claude Sonnet 4.6
gpt-oss-120b
Context window
200,000 tokens
131,072 tokens
Max output tokens
8,192 tokens
131,072 tokens
Vision
Yes
No
Function calling
Yes
Yes
Streaming
Yes
No
Release date
Feb 2026
Aug 2025

Cost calculator

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

Claude Sonnet 4.6
Monthly
$3.1K
Annual
$38.3K
gpt-oss-120b
Monthly
$39
Annual
$471
Save $3.1K/month with gpt-oss-120b

When to pick which

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

  • Long-context tasks

    Use Claude Sonnet 4.6. Its 200K context window handles large codebases and documents better than 131K.

  • High-volume text generation

    Use gpt-oss-120b. Output tokens are 98% 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 both input and output tokens.

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