Claude Sonnet 5 vs gpt-oss-20b
2026 Stored listed rates & illustrative token-cost comparison
Claude Sonnet 5
Legacy / Superseded
Legacy / superseded version. Newer models are available; official or partner channels may still serve this version.
Illustrative Listed-Rate Difference
gpt-oss-20b about 99% lower
1M input + 200K output tokens; not a monthly bill
📌 Executive Summary (TL;DR):Under a standard baseline of 1M input + 200K output tokens, gpt-oss-20b lists approximately 99% lower than Claude Sonnet 5. For high-throughput production workloads, gpt-oss-20b delivers superior unit economics; model your specific monthly workload below before migrating.(Price records last updated 2026-10-11 (UTC))
💡 10M Monthly Token Workload Simulation
Simulating a production workload (10M input + 2M output tokens): Claude Sonnet 5 listed rate totals ~$40.00, while gpt-oss-20b totals ~$0.36. Switching to gpt-oss-20b yields ~$39.64/mo in raw token savings.
Metric
Claude Sonnet 5 (Anthropic)
gpt-oss-20b (OpenAI)
Input listed rate
$2.00 / 1M Tokens
$0.02 / 1M Tokens
Output listed rate
$10.00 / 1M Tokens
$0.09 / 1M Tokens
Cached Input rate
$0.20 / 1M Tokens
$0.0090 / 1M Tokens
Context Window
1000K Tokens
131K Tokens
Modality
llm
llm
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