claude-opus-4-8 vs claude-sonnet-4-6
Side-by-side comparison of claude-opus-4-8 and claude-sonnet-4-6: benchmarks, pricing, context window and capabilities. Both are accessible through Requesty's unified API. claude-opus-4-8 outperforms claude-sonnet-4-6 on 7 of 7 shared benchmarks.
claude-opus-4-8
Input / 1M
$5.00
Output / 1M
$25.00
Context
1M
Model ID
anthropic/claude-opus-4-8
claude-sonnet-4-6
Input / 1M
$3.00
Output / 1M
$15.00
Context
1M
Model ID
anthropic/claude-sonnet-4-6
Benchmark comparison
Intelligence Indexreasoning
claude-opus-4-861.4%
claude-sonnet-4-651.7%
Coding Indexcoding
claude-opus-4-856.7%
claude-sonnet-4-650.9%
GPQA Diamondreasoning
claude-opus-4-892.0%
claude-sonnet-4-687.5%
Terminal-Bench Hardagentic
claude-opus-4-858.3%
claude-sonnet-4-653.0%
τ²-Benchagentic
claude-opus-4-894.4%
claude-sonnet-4-675.7%
SciCodecoding
claude-opus-4-853.5%
claude-sonnet-4-646.8%
Humanity's Last Examreasoning
claude-opus-4-845.7%
claude-sonnet-4-630.0%
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 | claude-sonnet-4-6 | |
|---|---|---|
| Input price / 1M | $5.00 | $3.00 |
| Output price / 1M | $25.00 | $15.00 |
| Context window | 1M tokens | 1M tokens |
| Max output | 128K tokens | 64K tokens |
| Vision input | Yes | Yes |
| Tool calling | Yes | Yes |
| Reasoning | Yes | Yes |
| Prompt caching | Yes | Yes |
| Computer use | Yes | Yes |
| Provider | Anthropic PBC | Anthropic PBC |
Questions people ask
Is claude-opus-4-8 better than claude-sonnet-4-6?
claude-opus-4-8 outperforms claude-sonnet-4-6 on 7 of 7 shared benchmarks. See the benchmark comparison above for specifics: claude-opus-4-8 and claude-sonnet-4-6 have different strengths across reasoning, coding, math and multimodal tasks.
Which is cheaper, claude-opus-4-8 or claude-sonnet-4-6?
claude-sonnet-4-6 is cheaper. claude-opus-4-8 costs $5.00/$25.00 per 1M input/output tokens, while claude-sonnet-4-6 costs $3.00/$15.00.
Can I use claude-opus-4-8 and claude-sonnet-4-6 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 "anthropic/claude-sonnet-4-6", no other code changes needed.
What are the context windows?
claude-opus-4-8 supports up to 1M tokens of context. claude-sonnet-4-6 supports up to 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 claude-sonnet-4-6 with one line of code
Requesty provides a single OpenAI-compatible API for 400+ models. Change the model parameter, not your code.
Get started free