Claude Opus 5 vs LFM2.5-2.6B: Specs & Benchmark Comparison
Claude Opus 5 is developed by Anthropic, while LFM2.5-2.6B comes from Liquid AI. Claude Opus 5 was released in July 2026, and LFM2.5-2.6B followed a month later in August 2026. LFM2.5-2.6B has a published size of about 3 billion parameters; Anthropic has not disclosed the parameter count of Claude Opus 5.
We have 13 benchmark results for Claude Opus 5 and 8 benchmark results for LFM2.5-2.6B, 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 LFM2.5-2.6B, so pricing and context cannot be compared directly.
| Characteristic | Claude Opus 5 | LFM2.5-2.6B |
|---|---|---|
| Company | Anthropic | Liquid AI |
| Release Date | July 24, 2026 | August 4, 2026 |
| Parameters | — | 3B |
| Multimodal | Yes | No |
| Context (input) | 1.0M | — |
| Context (output) | 128K | — |
| Input Price / 1M | $5.00 | — |
| Output Price / 1M | $25.00 | — |
| Average Score | 55.0% | 55.5% |
Verdict
Both models show equal results — the choice depends on your specific use case.
Both models show comparable average scores: Claude Opus 5 — 0.5, LFM2.5-2.6B — 0.6.
Both models were released around the same time: 7/24/2026 and 8/4/2026.
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Frequently Asked Questions
Which is better for coding — Claude Opus 5 or LFM2.5-2.6B?
Which model is cheaper — Claude Opus 5 or LFM2.5-2.6B?
Which has a larger context window — Claude Opus 5 or LFM2.5-2.6B?
The Claude Opus 5 and LFM2.5-2.6B 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 LFM2.5-2.6B page. See also the complete list of AI model comparisons.