GPT-5.4 alternatives
Looking for an alternative to GPT-5.4? Here are the 6 closest llm provider / model options for AI coding, each ranked by how well it replaces GPT-5.4 — with the concrete reason to switch.
Quick comparison
| Model | Input price | SWE-bench | Context window | Speed |
|---|---|---|---|---|
| GPT-5.4 (you) | $2.50 | 74% | 1M+ | Standard |
| GPT-5.5 | $5 | 75% | 1M+ | Standard |
| Claude Sonnet 4.6 | $3 | 64% | 1M+ | Standard |
| Claude Opus 4.7 | $5 | 72% | 1M+ | Slow/Reasoning |
| GPT-5.1 | $1.25 | 76% | 400K | Medium |
| Qwen 3.6 27B | Free (self-hosted) | 68% | 256K | Fast |
| o3 | $2 | 71% | 200K | Slow/Reasoning |
The best GPT-5.4 alternatives
GPT-5.5
Frontier reasoning, agentic coding, long-context refactors, multimodal analysis, replaces GPT-5.4 as default flagship
Why consider it instead:
- Higher SWE-bench (75% vs 74%)
Day-to-day coding, fast agentic loops, balanced cost/quality
Why consider it instead:
- Built for: Day-to-day coding, fast agentic loops, balanced cost/quality
Complex refactors, agentic coding, hard debugging, deep reasoning
Why consider it instead:
- Built for: Complex refactors, agentic coding, hard debugging, deep reasoning
GPT-5.1
Default daily-driver coding agent with adaptive reasoning and warmer chat tone
Why consider it instead:
- Cheaper — $1.25/1M input vs $2.5, ~2.0× less
- Higher SWE-bench (76% vs 74%)
Single-GPU agentic coding (fits on 1x H100), workstation deployment, beats much larger MoE models on agentic tasks, Apache 2.0 commercial use
Why consider it instead:
- Cheaper — $0/1M input vs $2.5
- Faster — better for autocomplete
o3
Hardest coding problems, complex multi-step reasoning, advanced debugging
Why consider it instead:
- Cheaper — $2/1M input vs $2.5, ~1.3× less
Switching from GPT-5.4? Check the new tool fits the rest of your stack — Flowpicker shows compatibility warnings live.
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