Anthropic: Claude Sonnet 4.5 vs OpenAI: GPT-4.1
Side-by-side specs, pricing, and benchmarks. Pick a winner for your team's use case.
Use it in a Space
Spin up a Switchy Space with either model — your whole team @-mentions it with shared context, pooled credits, one memory.
Anthropic: Claude Sonnet 4.5
- Provider
- anthropic
- Context
- 1000k
- Input $/Mtok
- $3.00
- Output $/Mtok
- $15.00
- Max output
- 64000
- Modalities
- text, image, file
OpenAI: GPT-4.1
- Provider
- openai
- Context
- 1048k
- Input $/Mtok
- $2.00
- Output $/Mtok
- $8.00
- Max output
- —
- Modalities
- image, text, file
Price delta
Anthropic: Claude Sonnet 4.5 is $1.00/Mtok more expensive than OpenAI: GPT-4.1 on input. Output: Anthropic: Claude Sonnet 4.5 is $7.00/Mtok more expensive than OpenAI: GPT-4.1.
Which to pick
Pick **Claude Sonnet 4.5** for everyday team chat where reasoning quality and tone consistency matter — drafting longer-form output, reviewing code in conversation, debating decisions with a teammate. Anthropic's mid-tier still edges GPT-4.1 on most general-purpose evals and refusal behaviour, and the price ($3 in / $15 out per Mtok) is in the same neighbourhood as GPT-4.1 ($2 / $8) once you account for output verbosity.
Pick **GPT-4.1** when you need its 1M-token context — full-repo ingestion, long board packs, hours of transcripts in one turn — or when you specifically want OpenAI's tool-calling shape for an existing pipeline. The 5x context advantage is the deciding factor; on shorter turns the per-Mtok savings are real but small.