gpt-5.1-codex-mini vs Claude Sonnet 5
2026 Stored listed rates & illustrative token-cost comparison
gpt-5.1-codex-mini
Retired
The first-party endpoint is retired. Partner-channel availability is tracked separately.
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Legacy / Superseded
Legacy / superseded version.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-5.1-codex-mini about 84% 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-5.1-codex-mini lists approximately 84% lower than Claude Sonnet 5. For high-throughput production workloads, gpt-5.1-codex-mini delivers superior unit economics; model your specific monthly workload below before migrating.
💡 10M Monthly Token Workload Simulation
Simulating a production workload (10M input + 2M output tokens): gpt-5.1-codex-mini listed rate totals ~$6.50, while Claude Sonnet 5 totals ~$40.00. Switching to gpt-5.1-codex-mini yields ~$33.50/mo in raw token savings.
Metric
gpt-5.1-codex-mini (OpenAI)
Claude Sonnet 5 (Anthropic)
Input listed rate
$0.25 / 1M Tokens
$2.00 / 1M Tokens
Output listed rate
$2.00 / 1M Tokens
$10.00 / 1M Tokens
Cached Input rate
$0.03 / 1M Tokens
$0.20 / 1M Tokens
Context Window
400K Tokens
1000K Tokens
Modality
llm
llm
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