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Claude Sonnet 4.6 vs gpt-oss-120b

List-price comparison ·Claude Sonnet 4.6 details ·gpt-oss-120b details

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For a typical workload (100,000 requests / mo), gpt-oss-120b is the cheapest — 99% less than the priciest here ($11.24/mo vs $960.00/mo).

 Claude Sonnet 4.6gpt-oss-120b
Input / 1M tokens$3.00$0.037
Output / 1M tokens$15.00$0.170
Typical request (1,200 in + 400 out)$0.0096$0.0001
Context window1M tokens131,072 tokens
Max output128k tokens131,072 tokens
Quality score88/10078/100
TierBalancedBalanced
ProviderAnthropicOpenAI

Projected monthly cost

Requests / moClaude Sonnet 4.6gpt-oss-120b
1,000$9.60$0.1124
10,000$96.00$1.12
100,000$960.00$11.24
Open all in the calculator — adjust volume and token counts →

Claude Sonnet 4.6

Strong price-to-performance for production agents: reliable tool use, structured JSON output, and solid coding ability at roughly a fifth of Opus's cost.

Can still misstep on the hardest multi-step reasoning chains where Opus would succeed — budget for occasional escalation to a flagship model.

gpt-oss-120b

Auto-synced from OpenRouter — no editorial write-up yet.

More comparisons

Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.