claude-opus-4-8 vs gpt-5.4
Side-by-side comparison of claude-opus-4-8 and gpt-5.4: benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. claude-opus-4-8 outperforms gpt-5.4 on 4 of 6 shared benchmarks.
claude-opus-4-8
Input / 1M
$5.00
Output / 1M
$25.00
Context
1M
Model ID
anthropic/claude-opus-4-8
gpt-5.4
Input / 1M
$2.50
Output / 1M
$15.00
Context
1.1M
Model ID
openai/gpt-5.4
Benchmark comparison
Intelligence Indexreasoning
claude-opus-4-861.4%
gpt-5.456.8%
Coding Indexcoding
claude-opus-4-856.7%
gpt-5.457.2%
GPQA Diamondreasoning
claude-opus-4-892.0%
gpt-5.492.0%
Terminal-Bench Hardagentic
claude-opus-4-858.3%
gpt-5.457.6%
τ²-Benchagentic
claude-opus-4-894.4%
gpt-5.487.1%
SciCodecoding
claude-opus-4-853.5%
gpt-5.456.6%
Humanity's Last Examreasoning
claude-opus-4-845.7%
gpt-5.441.6%
Scores sourced from official model cards, Artificial Analysis, and public leaderboards. Benchmarks measure specific skills and don't capture every aspect of model quality.
Pricing & specifications
| claude-opus-4-8 | gpt-5.4 | |
|---|---|---|
| Input price / 1M | $5.00 | $2.50 |
| Output price / 1M | $25.00 | $15.00 |
| Context window | 1M tokens | 1.1M tokens |
| Max output | 128K tokens | 128K tokens |
| Vision input | Yes | Yes |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Prompt caching | Yes | Yes |
| Computer use | Yes | N/A |
| Provider | Anthropic PBC | OpenAI Inc. |
Questions people ask
Is claude-opus-4-8 better than gpt-5.4?
claude-opus-4-8 outperforms gpt-5.4 on 4 of 6 shared benchmarks. See the benchmark comparison above for specifics: claude-opus-4-8 and gpt-5.4 have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper, claude-opus-4-8 or gpt-5.4?
gpt-5.4 is cheaper. claude-opus-4-8 costs $5.00/$25.00 per 1M input/output tokens, while gpt-5.4 costs $2.50/$15.00.
Can I use claude-opus-4-8 and gpt-5.4 through the same API?
Yes. Requesty provides a single OpenAI-compatible API that routes to both. Change just the "model" parameter to switch between "anthropic/claude-opus-4-8" and "openai/gpt-5.4", no other code changes needed.
What are the context windows?
claude-opus-4-8 supports up to 1M tokens of context. gpt-5.4 supports up to 1.1M tokens. Longer context means you can feed larger documents or codebases in a single prompt, though quality often degrades past 128K for most models.
Switch between claude-opus-4-8 and gpt-5.4 with one line of code
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