How much does Openai Gpt 4o cost compared to Claude 3 7 Sonnet per 1M tokens?

Openai Gpt 4o bills $2.50/1M input tokens and $10.00/1M output tokens (50% automatic prefix cache read ($1.25/1M), $0 write fee), whereas Claude 3 7 Sonnet bills $3.00/1M input tokens and $15.00/1M output tokens (90% explicit cache read ($0.30/1M), 1.25x ($3.75/1M) write fee (5m TTL)). Openai Gpt 4o is 17% cheaper on baseline input tokens.

Which model has faster streaming P90 TTFT latency: Openai Gpt 4o or Claude 3 7 Sonnet?

Across 24-hour rolling telemetry probes, Openai Gpt 4o records 480ms P90 TTFT (128K tokens), while Claude 3 7 Sonnet records 610ms (200K tokens). Openai Gpt 4o delivers faster initial token streaming.

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Openai Gpt 4o vs Claude 3 7 Sonnet: $$2.50 vs $$3.00 / 1M Tokens

1. Direct Input & Output Rate Comparison: Openai Gpt 4o costs $2.50/1M input and $10.00/1M output, while Claude 3 7 Sonnet costs $3.00/1M input and $15.00/1M output. Switching uncached workloads to Openai Gpt 4o reduces raw input spend by 17%.

2. Prompt Caching & 5-Minute TTL Economics: Openai Gpt 4o provides 50% automatic prefix cache read ($1.25/1M), $0 write fee, whereas Claude 3 7 Sonnet uses 90% explicit cache read ($0.30/1M), 1.25x ($3.75/1M) write fee (5m TTL). Pinning static repository prefixes in Coding Agents reduces realistic 25%-TTL write-retained spend by 61.60% to 65.38%.

3. Context Window & Cliff Thresholds: Openai Gpt 4o supports 128K tokens and Claude 3 7 Sonnet supports 200K tokens. Pruning sliding-window history below 128K/198K avoids 2x context-cliff surcharges.

4. P90 Streaming Latency (TTFT): In 24-hour rolling probes, Openai Gpt 4o achieves the faster P90 Time-To-First-Token (480ms vs 610ms).

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Contender A

Openai Gpt 4o

Input / Output per 1M:$2.50 / $10.00

Cache Policy:50% automatic prefix cache read ($1.25/1M), $0 write fee

Context Window:128K tokens

P90 TTFT Latency:480 ms

Contender B

Claude 3 7 Sonnet

Input / Output per 1M:$3.00 / $15.00

Cache Policy:90% explicit cache read ($0.30/1M), 1.25x ($3.75/1M) write fee (5m TTL)

Context Window:200K tokens

P90 TTFT Latency:610 ms