Claude Opus 5 vs IBM Granite 4.2 8B: Specs & Benchmark Comparison
Claude Opus 5 is developed by Anthropic, while IBM Granite 4.2 8B comes from IBM. Claude Opus 5 was released in July 2026, and IBM Granite 4.2 8B followed a month later in August 2026. IBM Granite 4.2 8B has a published size of about 8 billion parameters; Anthropic has not disclosed the parameter count of Claude Opus 5.
We have 13 benchmark results for Claude Opus 5 and 18 benchmark results for IBM Granite 4.2 8B, but they were measured on different benchmarks, so there is no like-for-like scoreboard.
Claude Opus 5 is available through an API at $5 per million input tokens with a 1M-token context window. We do not track a hosted API for IBM Granite 4.2 8B, so pricing and context cannot be compared directly.
| Characteristic | Claude Opus 5 | IBM Granite 4.2 8B |
|---|---|---|
| Company | Anthropic | IBM |
| Release Date | July 24, 2026 | August 25, 2026 |
| Parameters | — | 8B |
| Multimodal | Yes | No |
| Context (input) | 1.0M | — |
| Context (output) | 128K | — |
| Input Price / 1M | $5.00 | — |
| Output Price / 1M | $25.00 | — |
| Average Score | 55.0% | 56.7% |
Verdict
IBM Granite 4.2 8B leads in 1 out of 2 comparison categories.
Both models show comparable average scores: Claude Opus 5 — 0.5, IBM Granite 4.2 8B — 0.6.
IBM Granite 4.2 8B is newer: released 8/25/2026 vs 7/24/2026.
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Frequently Asked Questions
Which is better for coding — Claude Opus 5 or IBM Granite 4.2 8B?
Which model is cheaper — Claude Opus 5 or IBM Granite 4.2 8B?
Which has a larger context window — Claude Opus 5 or IBM Granite 4.2 8B?
The Claude Opus 5 and IBM Granite 4.2 8B comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Opus 5 or IBM Granite 4.2 8B page. See also the complete list of AI model comparisons.