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Compare/DeepSeek V3.1 vs GPT-5.5

DeepSeek V3.1 vs GPT-5.5

DeepSeekDeprecated

DeepSeek V3.1

$0.19 / $0.70 · 164,000 ctx · 18 providers
OpenAIActive

GPT-5.5

$0.19 / $1.13 · 1,050,000 ctx · 45 providers
01Differences

At a glance

Computed automatically from tracked data.

• DeepSeek V3.1's input price is 1% lower than GPT-5.5's ($0.19 vs $0.19 per 1M).
• DeepSeek V3.1's output price is 61% higher than GPT-5.5's ($0.70 vs $1.13 per 1M).
• GPT-5.5 has a 6.4× larger context window (1,050,000 vs 164,000 tokens).
• They differ in open weights (DeepSeek V3.1: Yes, GPT-5.5: No).
02Specs

Side by side

DeepSeek V3.1GPT-5.5
Input / 1M$0.19$0.19
Output / 1M$0.70$1.13
Context164,0001,050,000
Max output164,000128,000
Providers1845
Released2025-01-202026-04-23
03Prices

Common providers

ProviderDeepSeek V3.1GPT-5.5
abacus$0.55 / $1.66$5.00 / $30.00
merge-gateway$0.50 / $1.50$5.00 / $30.00
nano-gpt$0.20 / $0.70$5.00 / $30.00
pioneer$0.56 / $1.68$5.00 / $30.00
vercel$0.25 / $0.95$5.00 / $30.00
04History

Recent changes

DeepSeek V3.1
2026-08-27 — Added tokengo
2026-08-16 — Removed nano-gpt
2026-08-09 — Added merge-gateway
2026-08-05 — Added deepinfra
2026-08-05 — Added huggingface
GPT-5.5
2026-09-10 — Context amazon-bedrock
2026-09-08 — Added 302ai
2026-09-06 — Context nano-gpt
2026-08-27 — Price up requesty
2026-08-27 — Price up requesty
as of 2026-09-16
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