LLMCost

OpenAI: GPT-5.6 Sol vs OpenAI: gpt-oss-120b (batch)

On input price, OpenAI: gpt-oss-120b (batch) is ~135.1× cheaper. Verified 2026-10-21.

OpenAI: GPT-5.6 Sol $4.00/$20.00vsOpenAI: gpt-oss-120b (batch) $0.030/$0.136

Verdict

On blended price (3:1 input:output), OpenAI: gpt-oss-120b (batch) is ~142.3× cheaper ($0.030/$0.136 vs $4.00/$20.00 per 1M tokens).

Pricing

Per-million-token list prices, verified 2026-10-21. Green marks the better value.

MetricOpenAI: GPT-5.6 SolOpenAI: gpt-oss-120b (batch)
Input / 1M$4.00$0.030
Output / 1M$20.00$0.136
Cache read / 1M$0.400—
Blended (3:1)$8.00/1M$0.056/1M
Estimated monthly costOpenAI: GPT-5.6 SolOpenAI: gpt-oss-120b (batch)
Chatbot10,000 reqs · 800/400 tok$112.00$0.78
Coding agent5,000 reqs · 8000/2000 tok$360.00$2.54
RAG pipeline30,000 reqs · 4000/500 tok$780.00$5.59

Plug in your own numbers in the calculator, or paste a real bill into the Bill Shredder.

Specifications & capabilities

MetricOpenAI: GPT-5.6 SolOpenAI: gpt-oss-120b (batch)
Context window1.1M131K
Max output128K118K
Vision input✓–
Tool calling✓✓
Reasoning✓✓

Quality

Intelligence Index by Artificial Analysis (independent evaluations, 0–100).

Verified intelligence scores aren't available for both models yet. See the full leaderboard.

Performance

Measured by Artificial Analysis on live endpoints.

Speed measurements aren't available for both models yet.

Provider

Infrastructure metrics for the organizations behind these models.

MetricOpenAIOpenAI
Listed endpoints1212
Reliability99.9%99.9%
Avg latency450 ms450 ms
Pricing tiersstandard, batch, provisionedstandard, batch, provisioned

Full details: OpenAI: GPT-5.6 Sol pricing · OpenAI: gpt-oss-120b (batch) pricing